AT&T DS1/DMi/ISDN-PRI manuale d’uso

AT&T AT&T 555-025-101 Issue 4 April 1990 DEFINIT Y ® Communications System and System 75 and System 85 DS1/DMI/ISDN-PRI Reference[...]

NOTICE While reasonable efforts were made to ensure that the information in this document was complete and accurate at the time of printing, AT&T can assume no responsibility for any errors. Changes or corrections to the information contained in this document may be incorporated into future issues. Prepared by AT&T Technical Publications De[...]

CONTENTS ABOUT THIS DOCUMENT PURPOSE INTENDED AUDIENCES PREREQUISITE SKILLS AND KNOWLEDGE HOW THIS DOCUMENT IS ORGANIZED HOW TO USE THIS DOCUMENT TRADEMARKS AND SERVICE MARKS RELATED SOURCES HOW TO MAKE COMMENTS ABOUT THIS DOCUMENT 1. INTRODUCTION FUNDAMENTALS OF DS1 SIGNALS Channels Framing Formats Signaling Types Line-Coding Formats IMPORTANT CON[...]

iv CONTENTS DS1/DMI PRIVATE-NETWORK CONNECTIONS Generic 1, Generic 2, System 75, or System 85 to Another System Host Computer to Another System IBM ® IDNX Multiplexer to Another System Other Vendor Digital Switch to Another System Analog Switch to Another System OPS to Another System Via a D4-Channel Bank DS1/DMI PUBLIC-NETWORK CONNECTIONS 4ESS to[...]

CONTENTS v System 85 Traditional Modules 3-9 Generic 1 and Generic 2 Universal Modules 3-9 4. THE DIGITAL LOSS PLAN LOSS-PLAN IMPLEMENTATION AND PROVISIONING Generic 2 Generic 1 PORT-TO-PORT LOSS VALUES DS1/DMI/ISDN-PRI PORT LOSSES TERMINATING A DS1 AT A CHANNEL BANK Tie Trunk Ports CO DID Trunk Ports OPS Ports 5. SYNCHRONIZATION OF DIGITAL FACILIT[...]

vi CONTENTS Line+Trunk Mode DS1/DMI-BOS (ANN35 or TN767 with TN555) 5-30 DMI-MOS (ANN35 or TN767 with TN755) 5-30 USE OF GENERIC 1 AS A SYSTEM CLOCK REFERENCE 5-30 Trunk-Mode ISDN-PRI (TN767) 5-30 Trunk-Mode Interface (ISDN-PRI + Robbed Bit) (TN767) 5-30 Line-Only Mode DS1/DMI-BOS (TN767) 5-31 Trunk-Mode DS1/DMI-MOS (TN767) 5-31 6. PORT TYPES/INSTA[...]

CONTENTS vii Procedure 010 Word 4: Procedure 100 Word 1: Procedure 100 Word 2: Procedure 100 Word 3: Procedure 101 Word 1: Procedure 103 Word 1: Procedure 116 Word 1: Procedure 107 Word 1: Procedure 108 Word 1: GENERIC 2 Line Side (B-Channel) BC and ISDN Routing Options Trunk Group Type, Signaling, and Dial Access (ID) Code Trunk Group Data Transla[...]

viii CONTENTS Procedure 101 Word 1: Procedure 103 Word 1: Procedure 116 Word 1: Procedure 012 Word 1: Procedure 012 Word 2: Procedure 012 Word 3: Procedure 279 Word 1: Procedure 309 Word 1: Procedure 309 Word 5: Procedure 321 Word 1: Procedure 321 Word 5: Procedure 107 Word 1: Procedure 108 Word 1: ISDN Trunk Group, CDR, and Digital Loss Plan Netwo[...]

CONTENTS ix 8. MAINTENANCE AND ALARMS GENERIC 1 AND GENERIC 2 ISDN-PRI MAINTENANCE PHILOSOPHY GENERIC 2 MAINTENANCE CAPABILITIES AND CONCERNS Generic 2 Maintenance Procedures Summary of Generic 2 Maintenance Capabilities GENERIC 1 MAINTENANCE CAPABILITIES AND CONCERNS Generic 1 Maintenance Procedures Summary of Generic 1 Maintenance Capabilities AL[...]

x CONTENTS System 85 DS1/DMI-BOS to a CEM or CDM C. ADMINISTRATIVE PROCEDURE SUMMARY PROCEDURE 000 WORD 3 (Generic 2 Only) PROCEDURE 000 WORD 4 (System 85 R2V4 & Generic 2) PROCEDURE 010 WORD 4 (System 85 R2V4 & Generic 2) ISDN Routing Parameters (System 85 R2V4 & Generic 2) BC (System 85 R2V4 Only) PROCEDURE 012 (System 85 R2V4 & G[...]

CONTENTS xi D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES ABBREVIATIONS AB-1 GLOSSARY INDEX D-1 GL-1 IN- 1[...]

xii CONTENTS LIST OF FIGURES Figure 1-1. Figure 1-2. Figure 1-3. Figure 1-4. Figure 1-5. Figure 1-6. Figure 1-7. System 85 R2V4 ISDN Configuration Generic 2 ISDN Network Configuration Generic 1 ISDN Network Configuration D4 Framing DS1 Extended Superframe Format DS1 Signal, Framing Format, and ESF Superframe (24 Frames) Alternate Mark Inversion Exa[...]

CONTENTS xiii Figure 5-17. Figure 5-18. Figure 5-19. Figure 5-20. Figure 6-1. Figure 6-2. Figure 7-1. Figure 7-2. Figure 7-3. Figure 7-4. Figure 7-5. Figure 7-6. Figure 7-7. Figure 7-8. Figure 7-9. Figure 7-10. Figure 7-11. Figure 7-12. Figure 7-13. Figure 7-14. Figure 7-15. Figure 7-16. Figure 7-17. Figure 7-18. Figure 7-19. Excessive Cascading Mi[...]

xiv CONTENTS Figure 7-20. Figure 7-21. Figure 7-22. Figure 7-23. Figure 7-24. Figure 7-25. Figure 7-26. Figure 7-27. Figure 7-28. Figure 7-29. Figure 7-30. Figure 7-31. Figure 7-32. Figure 7-33. Figure 7-34. Figure 7-35. Procedure 309 Word 5: ARS and Transit Network Identifiers (System 85 R2V4) Procedure 321 Word 1: AAR (System 85 R2V4) Procedure 3[...]

CONTENTS x v Figure 7-44. Figure 7-45. Figure 7-46. Figure 7-47. Figure 7-48. Figure 7-49. Figure 7-50. Figure 7-51. Figure 7-52. Figure 7-53. Figure 7-54. Figure 7-55. Figure 7-56. Figure 7-57. Figure 7-58. Figure 7-59. Figure 7-60. Figure 7-61. Figure 7-62. Figure 7-63. Procedure 116 Word 1: DS1/DMI/ISDN-PRI Trunk Assignments (Generic 2) Procedur[...]

xvi CONTENTS Figure 7-76. Figure 7-77. Figure 7-78. Figure 7-79. Figure 7-80. Figure 8-1. Figure A-1. Figure A-2. Figure A-3. Figure A-4. Figure A-5. Figure A-6. Figure B-1. Figure B-2. Figure B-3. Figure B-4. Figure B-5. Figure B-6. Figure B-7. Figure B-8. Figure B-9. Figure B-10. Figure B-11. Figure B-12. Figure B-13. Figure B-14. Figure B-15. SI[...]

CONTENTS xvii LIST OF TABLES TABLE 1-1. TABLE 1-2. TABLE 1-3. TABLE 3-1. TABLE 4-1. TABLE 4-2. TABLE 5-1. TABLE 6-1. TABLE 7-1. TABLE 7-2. TABLE 7-3. TABLE 7-4. TABLE 7-5. TABLE 7-6. TABLE 7-7. 24th-Channel Signaling Arrangement Data-Module Capabilities BCCOS System 85 Traditional Module Equalizer Settings (Metallic Cable) Digital Loss Plan Encodes[...]

xviii CONTENTS TABLE C-3. TABLE C-4. TABLE D-1. TABLE D-2. TABLE D-3. TABLE D-4. User-to-User IE Opcodes C-12 Codeset Map Number to Incoming and Outgoing Translations C-12 Trunk/Signaling Cross References D-2 R2V4 Alternate Signaling Type Translations D-6 Signaling Type Compatibility D-7 Signaling Type Definitions D-8[...]

ABOUT THIS DOCUMENT PURPOSE Over the past several years, basic digital signal level 1 (DS1) service has evolved to include new capabilities and thereby support more sophisticated applications. The three prime applications are: 1 . 2 . 3 . Digital multiplexed interface with bit-oriented signaling (DMI-BOS) Digital multiplexed interface with message-[...]

xx ABOUT THIS DOCUMENT INTENDED AUDIENCES Since this document contains information ranging from the brief tutorial to the detailed requirements, it should prove useful to several groups of readers, including: ● ● ● ● ● ● ● Marketing personnel Technical consultants Network engineers Installation personnel System administrators Account [...]

ABOUT THIS DOCUMENT xxi 6. PORT TYPES/INSTALLATION COMPATIBILITIES — Describes the DS1/DMI circuit pack operating modes, slot restrictions, and administration considerations and restrictions. This section also includes a table that lists the available port types and shows their compatibility on a system, release, version, and circuit-pack suffix [...]

xxii ABOUT THIS DOCUMENT HOW TO USE THIS DOCUMENT How you will use this document will depend on several factors such as the amount of training you have received or your personal preferences for working with something new. You may want to read this document from cover to cover, use it merely as a reference when questions arise, or find that somethin[...]

ABOUT THIS DOCUMENT xxiii Channel Division Multiplexer Installation and Maintenance Manual 365-165-101IS Channel Expansion Multiplexer Installation and Maintenance Manual 365-160-101IS D4-Channel Bank Channel Units — Application Engineering 855-351-105 DEFINITY Communications System Generic 1.1 to 4ESS Via ISDN PRI Access 555-037-234 DEFINITY Com[...]

xxiv ABOUT THIS DOCUMENT[...]

1. INTRODUCTION Digital signal level 1 (DS1) trunks (trunks that carry 24 multiplexed channels on a single 1.544M-bps stream and use a bit-oriented signaling (BOS) interface) were introduced in 1962 to replace older analog transmission equipment used between toll offices. At the same time, D-type channel banks (channel banks that convert analog dat[...]

1-2 INTRODUCTION The bit stream of the DS1 protocol (1s and 0s) is transported over a DS1 line in a special way. The 1s are represented as alternating positive and negative pulses (called an alternate mark inversion (AMI) or bipolar signal); the 0s are represented as the absence of pulses. Two formats known as a DS1 line-coding formats can be used [...]

INTRODUCTION 1-3 The term ISDN refers to the collection of international recommendations that are evolving toward adoption as a CCITT telecommunications standard. These recommendations are based on the following objectives: 1. 2. 3. To provide the user with end-to-end digital connectivity (which in theory will be independent of the network provider[...]

1-4 INTRODUCTION The BRI terminates at a subscriber’s residence or office. There, it connects either to an ISDN compatible terminal or to a conventional terminal via a terminal adapter. The BRI channel structure consists of a 2B + 1D format. Each B or bearer channel provides a 64K-bps information channel. Each D-channel provides a 16K-bps signali[...]

INTRODUCTION 1-5 Figure 1-1. System 85 R2V4 ISDN Configuration Generic 2 provides a signaling method called nonfacility-associated signaling (NFAS). NFAS allows a D-channel on one PRI facility (sometimes called a PRI pipe) to provide signaling for B-channels on another PRI pipe. With NFAS, if two or more PRI pipes are present, an optional D-channel[...]

1-6 INTRODUCTION Figure 1-2. Generic 2 ISDN Network Configuration Generic 1 and Generic 2 provide ISDN-PRI but do not support wideband channels. Additionally, ISDN-BRI is not currently supported in Generic 1. However, end-to-end digital connections are permitted via line-side DCP-interface voice terminals and DCP-interface data modules. Figure 1-3,[...]

INTRODUCTION 1-7 Figure 1-3. Generic 1 ISDN Network Configuration Channels Each channel transports 8-bit words (signal samples). Signal samples repeat at an 8K-Hz rate yielding a 64K-bps signal. The channels may be used to transmit any of four different types of signals.[...]

1-8 INTRODUCTION Voice Analog voice date is encoded into 64K-bps pulse-code modulation (PCM) samples using an encoding technique known as the Mu-255 law. Details of this encoding technique are not given here. The important point is that each DS1 channel can transport PCM-encoded 64K-bps voice signals. Voice-grade data Digital data Voice grade data [...]

INTRODUCTION 1-9 To properly transmit digital data, the following conditions must be met: ● ● ● The data communications protocol must meet the 1s-density requirement (see Line-Coding Formats later in this chapter). 24th-channel signaling must be administered (except for mode 1 data which can use robbed-bit facilities). (See 24th-Channel Signa[...]

1-10 INTRODUCTION Circuit-Switched Versus Packet-Switched Channels A circuit-switched channel provides the full bandwidth of a channel to the single terminating application on an end-to-end basis. For example, the full 64K-bps B-channel bandwidth is continuously available for both calling and called users. As a contrast, a single packet-switched ch[...]

INTRODUCTION 1-11 Figure 1-4. D4 Framing The D4 framing is the format compatible with D4-channel banks. The D4 framing is the only framing format supported by all equipment used with System 75 and System 85 DS1 (such as CEMs and CDMs). The DS1, while providing an error-detection capability, monitors the receive sequence of framing bits to detect tr[...]

1-12 INTRODUCTION ESF Framing Initially, this format was called F , pronounced “F sub e,” for framing extended. It is now called e extended superframe (ESF). The ESF framing format was developed after the D4 format. Not all equipment used with a DS1/DMI-BOS interface supports ESF. Specifically, most D4-channel banks (unless they are configured [...]

INTRODUCTION 1-13 end, one framing bit is inserted in each succeeding 193rd bit-position of the DS1 signal. The receive end uses the framing pattern to synchronize the end of one 24-channel block and the beginning of the next, to identify the channels that contain embedded signaling information, and to detect errors. NOTE: This 4K-bps facility data[...]

1-14 INTRODUCTION The CRC is used at the receive end to detect transmission errors. The CRC is calculated at the transmit end and multiplexed into the DS1 signal. At the receive end, the CRC is recalculated using the data in the received ESF superframe and then compared with the received CRC. If a transmission error (such as one caused by a noise h[...]

INTRODUCTION 1-15 For AT&T proprietary signaling, a complete set of signaling information is sent every 24 frames. This 24-frame period is not synchronized to the 12-frame superframe format of D4 framing or to the 24-frame superframe format of ESF framing. Each signaling word contains the equivalent of a channel identification number and the si[...]

1-16 INTRODUCTION For System 75, the TN722 provides only AT&T proprietary signaling. However, the TN722B can be administered to provide either AT&T proprietary signaling or DMI-BOS. The CCITT Q.921 ISDN-PRI recommendations require that MOS-type signaling be used. In DMI- MOS, signaling is done with messages that consist of a series of infor[...]

INTRODUCTION 1-17 v(t) +3 t - 3 01011011 1 Figure 1-7. Alternate Mark Inversion 1s-Density Requirement On the receive side, a DS1 uses the received bipolar pulses of the DS1 signal to recover the 1.544M- bps clock signal that transmitted the bit stream. To do this, the bipolar signal must contain enough pulses (1s) to allow the clock recover circui[...]

1-18 INTRODUCTION Restricted Channel A restricted channel is a digital transmission facility restricted to transmissions in which an all-0s octet (eight 0s in a single time slot) is never transmitted. In restricted channels, the line equipment’s transmitters use ZCS line coding. This format monitors the 24 DS0 channels and prevents eight consecut[...]

INTRODUCTION 1-19 UNCODED BIT STREAM 010011 00000000 111 00000000 00000000 01 PULSE STREAM 0+00- + 000+0- + -+ - 000-+0+- 000-+0+- 0 + VIOLATIONS BASED ON POLARITY OF LAST 1 TRANSMITTED Figure 1-8. Example of B8ZS Line Coding Applications requiring B8ZS line coding are currently in the minority, but it is expected that in the long term they will be[...]

1-20 INTRODUCTION Bipolar Violations As noted earlier, the DS1 bit stream is transmitted as a series of pulses. Successive pulses, regardless of the number of intervening spaces (0s), are of opposite polarity. A bipolar violation is the occurrence of two consecutive identical pulses, that is, when two positive or two negative pulses are received in[...]

INTRODUCTION 1-21 TABLE 1-2. Data-Module Capabilities Data Module DMI Mod e User Data Rat e Sync / Asyn c Bi t Invert Protocol Packaging Handshake Notes DTD M MPDM 2 0 1 2 300 - 19.2K 64K 56K to 19.2K both sync sync both yes yes no yes HDL C n o DDS HDL C mode 2 mode 2 mode 2 yes 1, 9 MPDM/M1* 3270 A 3270 T PC/PBX w/ASCII Term Emul 1 2 2 3 3 2 3 56[...]

1-22 INTRODUCTION The method used to provide ACCUNET ® switched digital service (used by D4-channel banks) also maintains the 1s-density requirement. This method uses only seven of the eight bits for each DS0 channel's 8-bit word to carry user data. The remaining bit (8) is “wired” to a 1. (MPDM/M1* is compatible with ACCUNET switched dig[...]

INTRODUCTION 1-23 Bearer Capability (BC) System 85 R2V4 introduced the administration attribute known as bearer capability (BC). The primary function of BC is to specify the transport mode and the channel requirements (clear/restricted) needed for completing a data call. BC is used for determining compatibility when non-ISDN facilities are connecte[...]

1-24 INTRODUCTION Generic 1 For information about how BC is done for Generic 1, refer to the AT&T DEFINITY 75/85 Communications System Generic 1 and System 75 and System 75 XE Feature Description (555-200- 201). Generic 2 Generic 2 continues the bearer capability concept with bearer capability class of service, (BCCOS). With BCCOS, switch admin[...]

INTRODUCTION 1-25 TABLE 1-3. BCCOS Switch Parameter Default Value Analog Lines 0 All trunks except Host Access 0 AAR/ARS Preferences 0 Host Access trunks 1 DCP data modules (both lines and trunks) 1 BRI extensions 0 NOTE: Extensions with multiple appearances must have the same BC administered for each appearance. ISDN Call Processing ISDN-PRI is a [...]

1-26 INTRODUCTION Incoming Calls Incoming ISDN calls are generally processed similar to outgoing ISDN calls. Initially, the called switch receives a setup message over the D-channel and processes the contents of the setup message. The call states of the switch, how the particular trunk groups are administered, and decisions taken as a result of pro[...]

INTRODUCTION 1-27 Administration software also allows services to be dedicated to specific channels by assigning a channel to a particular trunk type. In this way, the switch always provides enough trunks for a particular type of service. Channels administered for specific services are not available for ISDN- dynamic uses. With CBC Service Selectio[...]

1-28 INTRODUCTION CBC Service Selection CBC trunk groups eliminate the need for dedicating specific B-channels to a particular service. CBC Service Selection can dynamically select individual B-channels (from a group of B-channels) and allocate those B-channels to any of the subscribed services. The selected B-channel may function as a specific tru[...]

INTRODUCTION 1-29 one trunk type is needed, only one trunk group is available, and conventional routing digits are inadequate for the current application (for example, when using the same trunk group to provide DID, SDN, and DOD). A single trunk type, other than ISDN-dynamic, cannot provide all services since some calls use CO or tie trunk types. 4[...]

1-30 INTRODUCTION 5. 6. 7. 8. Interworking between ISDN-PRI and DCS is a complex issue that is beyond the scope of this document. However, for a combined ISDN-PRI/DCS network, several new ISDN feature and service options are available. These include: ● Call routing based on BC ● End-to-end ISDN connectivity routing ● BC passed on a call-by-ca[...]

INTRODUCTION 1-31 Full DCS feature transparency is provided between two or more Generic 2s interconnected with ISDN-PRI facilities. The supported voice terminal features include: ● ● ● ● ● ● Abbreviated dialing Alphanumeric display Automatic callback Call coverage Call forwarding — all calls Call waiting — terminating ● ● ● ?[...]

1-32 INTRODUCTION[...]

2. NETWORK CONNECTIONS AND CONFIGURATIONS This chapter provides a description of common connection arrangements with System 85 R2V4, DEFINITY ® Communications System Generic 1 and Generic 2. These connections include private network, public network, and those made through digital signal level 1 (DS1) auxiliary equipment. Also included is a descrip[...]

2-2 NETWORK CONNECTIONS AND CONFIGURATIONS 5 . 6 . 7 . Counting the number of messages and comparing this to other trunks Determining whether a channel is hyperactive Maintenance busying out a virtual trunk group with hyperactive channels or returning cleared channels to normal service For more information about troubleshooting hyperactivity, refer[...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-3 This means that in the exclusive case, the network’s call completes, and the user’s call must either wait or find another trunk. In the preferred case, the network’s call completes, and the user’s call is assigned to another trunk in this trunk group that is controlled by the same D-channel. DS1/DM[...]

2-4 NETWORK CONNECTIONS AND CONFIGURATIONS administrable but will not work for DMI-to-host-computer applications. Current versions of the AT&T 3B5 and 3B15 computers (DMI) provide E&M trunk signaling and only support the wink- in/wink-out trunk type. Regarding synchronization, the computer must always derive its timing from the DMI signal r[...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-5 compatibility with other vendor products, operation is usually not guaranteed. The only exception to this rule is DMI host applications, where the certification process is assumed to have been executed with the specific computer vendor in question. The certification process also includes verifying that the[...]

2-6 NETWORK CONNECTIONS AND CONFIGURATIONS DS1/DMI PUBLIC-NETWORK CONNECTIONS Public-network connections may include connections to COs, DACS frames, and toll offices. 4ESS to Another System (Special-Access Connection) Connections to a 4ESS switch are called special-access connections. The physical connection is made directly from customer premises[...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-7 Screening Intra-LATA Calls A 4ESS can be used to block within the local access and transport area (LATA). This is an inefficient use of the customer’s trunking arrangements, though. System 75, System 85, Generic 1, and Generic 2 special-access applications should use ARS to screen outgoing calls. By usin[...]

2-8 NETWORK CONNECTIONS AND CONFIGURATIONS DACS to Another System The DACS may be thought of as an “electronic patch panel” for DS1/DMI-BOS. Cross-connections may be made at either the DS1 (1.544M-bps) level or the DS0 (64K-bps) level. A fully equipped DACS can terminate or cross connect 127 independent DS1/DMI-BOS facilities. The DACS supports[...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-9 Since the D4-channel bank is located at the CO end of a DS1/DMI facility, it is the responsibility of the CO to set the channel unit attenuators to the appropriate loss values. Chapter 4, The Digital Loss Plan, includes suggested loss ranges for setting these attenuators. For synchronization purposes, it s[...]

2-10 NETWORK CONNECTIONS AND CONFIGURATIONS When CDMs are used to provide the drop and insert function, they are typically located near where a DS1/DMI-BOS facility leaves the switch and are placed in series with the DS1/DMI signal. The CDMs allow one or more channels to be inserted into a DS1/DMI facility at the transmit end and to be correspondin[...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-11 The assignment of CEM channels must be coordinated with the DS1/DMI-BOS channel assignments on the switch. This is necessary so that only voice and voice-grade data channels are compressed and so that digital data or 24th-signaling channels pass through uncompressed. The CEM does not place any restriction[...]

2-12 NETWORK CONNECTIONS AND CONFIGURATIONS The method for selecting the channels that are to be compressed and the channels that are to pass through uncompressed depends on the type of signaling used. Both methods are described as follows. If VBR signaling is used, the assignment of compressed and uncompressed channels on one of the two input DS1/[...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-13 System 85 or Generic 2 ISDN-PRI to Another Vendor’s Digital Switch When a System 85 or Generic 2 ISDN-PRI connects to another vendor’s customer-premises switch (another vendor’s ISDN-PRI or equivalent), several items should be verified to ensure compatibility. These include the interface electrical [...]

2-14 NETWORK CONNECTIONS AND CONFIGURATIONS Dial Tone Second dial tone may be provided by a 4ESS. However, it is recommended that the customer- premises switch provide a second dial tone. With this arrangement, the second dial tone can be provided through use of the ARS feature on all ISDN-PRI trunks that terminate on a 4ESS. Touch-Tone Capability [...]

NETWORK CONNECTIONS AND CONFIGURATIONS 2-15 Network Specific Facility For outgoing calls from the customer-premises side, the 4E11 and 4E12 will accept a network specific facility (NSF) but do not require that one be present. For call-by-call trunk groups, the 4ESS will check for a NSF and will reject the call if one is not present. Synchronization[...]

2-16 NETWORK CONNECTIONS AND CONFIGURATIONS[...]

3. DS1 TRANSMISSION AND CABLING Digital signal level 1 (DS1) is the specification for a particular digital signal format. DS1 interfaces should not be confused with T1 digital carriers. T1 is a specific transmission system. T1s are used to transmit digital signals of the DS1/DMI/ISDN-PRI format. This chapter describes the different methods of trans[...]

3-2 DS1 TRANSMISSION AND CABLING Digital transmission facilities are used to transmit digital signals from one location to another. Many different digital transmission systems exist of which T1 is one. The type of facility used depends primarily on the distance between the endpoints, but other requirements may also affect facility selection. For ex[...]

DS1 TRANSMISSION AND CABLING 3-3 ● ● ● ● ● ● ● Monitoring of the input DS1 or, when necessary, adding pulses (1s) to ensure that the ones- density requirements are met Removing bipolar violations (which implies incompatibility with B8ZS line coding) Termination of a DS1 or regeneration of received data using an office repeater Provisi[...]

3-4 DS1 TRANSMISSION AND CABLING Because ANN11Ds, ANN11Es, TN722Bs, and TN767s contain components that suppress unwanted emissions from a DS1, standard premises distribution system (PDS) cables may be used to interconnect these interfaces. The PDS wiring may only be used when connecting directly between System 75 and System 85 DS1s. Other equipment[...]

DS1 TRANSMISSION AND CABLING 3-5 DS1 DS1 655 FT MAXIMUM 655 FT MAXIMUM DSX-1 PHANTOM POINT A. DIRECT DISTANCE OF 1310 FT OR LESS NCTE NCTE DSX-1 DSX-1 DS1 OFFICE REPEATER OFFICE REPEATER DS1 655 FT MAXIMUM 655 FT MAXIMUM 3000 FT OR LESS B. DISTANCE OF 1311 FT TO 4310 FT DSX-1 DS1 NCTE T1 LINE REPEATER 655 FT MAXIMUM 3000 FT OR LESS 6000 FT OR LESS [...]

3-6 DS1 TRANSMISSION AND CABLING The customer is responsibility for maintaining NCTEs. When purchasing service from the LEC, the customer must specify the DS1 framing and line-coding requirements. For off-premises cabling, it is also possible to use any of the connection methods described for “On- Premises Cabling” as long as appropriate lightn[...]

DS1 TRANSMISSION AND CABLING 3-7 The transmission system connects to a DS1 via a DSX-1 cross-connect ● ● The transmission system meets any special requirements for the application (for example, the transmission of bipolar violations if B8ZS line coding must be used) Figure 3-3, Nonmetallic Cabling Configurations, shows nonmetallic cabling trans[...]

3- 8 DS1 TRANSMISSION AND CABLING DS1/DMI OR D4 CHANNEL BANK DSX-1 DSX-1 DS1/DMI OR D4 CHANNEL BANK CEM DSX-1 ANY DS1 TRANSMISSION MEDIA DSX-1 CEM DS1/DMI OR D4 CHANNEL BANK DSX-1 DSX-1 DS1/DMI OR D4 CHANNEL BANK A. CEM ONLY DS1/DMI OR D4 CHANNEL BANK DSX-1 CDM CD M DSX-1 DS1/DMI OR D4 CHANNEL BANK DSX-1 ANY DS1 TRANSMISSION MEDIA DSX-1 DEDCATE D C[...]

DS1 TRANSMISSION AND CABLING 3-9 LINE EQUALIZER AND COMPENSATION SETTINGS The Generic 1 and Generic 2 DS1 circuit packs generate a signal that is preequalized. Preequalized means that the bipolar signal is shaped so that when it reaches the cable end it conforms to the DSX- 1 power specification. System 85 Traditional Modules Traditional modules ma[...]

3-10 DS1 TRANSMISSION AND CABLING[...]

4. THE DIGITAL LOSS PLAN Transmission loss is required so that talker echo is minimized. Furthermore, transmission loss must be kept low enough so that speech volume is perceived as adequately loud. Transmission loss is the total of all losses and gains from one end of a connection to the other. Distributed transmission losses as well as any connec[...]

4-2 THE DIGITAL LOSS PLAN Some quantity of connection loss is desirable and deliberately engineered into most types of transmission links. The quantity of loss (magnitude and number of dBs) depends on the loss plan that is administered and the particular type of facility involved. Each particular set of port-to-port connection losses is known as a [...]

THE DIGITAL LOSS PLAN 4-3 TABLE 4-1. Digital Loss Plan Encodes Encode 0 1 2 3 4 5 6 7 8 Loss-Plan Function ANSI/EIA/TIA-464-A-1989 Designator The digital fixed-loss plan pad loss is determined — by the trunk type administered in procedure 100, word 1 ISL tie trunk S/DTT EIA tie trunk (recommended for ISDN) D/TT ISL digital CO D/CO -3/3 loss EIA d[...]

4-4 THE DIGITAL LOSS PLAN Loss plan pbx-eia — for private-network-only applications that use analog tie trunks or digital tie trunks pbx-low — for use with combination tie trunks (private networks tandemed with public networks) toll — for use with connections to an analog toll office or digital toll office Digital conn loss normal — same as[...]

THE DIGITAL LOSS PLAN 4-5 TABLE 4-2. Digital Loss Plan (Port-to-Port Losses) Transmit Direction Receive Direction (Values in dB Loss) ONS- Line OPS- Line ANAL Tie COMB or Analog CO Trunk EI A DCO IS L DT T ATO TRK DTO TRK ISL DCO TRK DTT BAL N BAL TRK On-premises station (ONS) Off-premises station (OPS) Analog tie trunk (A/TT) Combination or digita[...]

4 -6 THE DIGITAL LOSS PLAN switch will have value only after verification of this switch’s port-to-port loss specification. Conformance with ANSI standards greatly simplifies this process and reduces the likelihood of compatibility problems. ● ● The loss between switches is 0 dB over digital facilities, 1 dB for combination facilities, and VN[...]

THE DIGITAL LOSS PLAN 4-7 OPS Ports Analog off-premises station (OPS) facility requirements specify a loss not to exceed 4 dB in each direction. To provide for transmission stability (eliminate singing and echo) with D4-channel units, at least 1 dB of loss in both directions is required from the 2-wire analog hybrid terminals. Foreign exchange subs[...]

4-8 THE DIGITAL LOSS PLAN[...]

5. SYNCHRONIZATION OF DIGITAL FACILITIES The DS1 transmit and receive buffers (for Generic 1 and Generic 2) operate from a single external or internal clock. Each digital switch can accommodate multiple DS1 or T1 spans that link multiple switches. These may include both ISDN-PRI and DS1 links. Since each switch can transmit at a rate determined by [...]

5-2 SYNCHRONIZATION OF DIGITAL FACILITIES Figure 5-1-A, Options for Synchronization, shows one possible connection between a pair of D4- channel banks. Such a connection (using D4-channel banks) can typically be found with a pair of analog switching systems connected by T1-carrier facilities. For this arrangement, the transmitting portion of each c[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-3 NOTE: The deletion or repetition of a single frame is termed a slip or a controlled slip. For an individual digital bit stream, slips are serious impairments since digital switching systems with improperly synchronized clocks will eventually suffer slips on every received digital bit stream. Notice in figur[...]

5-4 SYNCHRONIZATION OF DIGITAL FACILITIES 3. 4. 5. Minimum costs Ease of administration Ease of maintenance For the hierarchical method, a node containing a very stable reference frequency is identified as the source or master reference. The master reference is transmitted to another node that is synchronized (slaved) to this master reference. A ne[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-5 MASTER REFERENCE FREQUENCY NOTE SLAVE NODES DIGITAL TRUNK PRIMARY REFERENCE NOTE: The dashed lines indicate which nodes supply reference frequencies and those facilities used to transmit the reference. Figure 5-2. Synchronization Hierarchy Switching nodes in digital networks are divided into synchronization[...]

5-6 SYNCHRONIZATION OF DIGITAL FACILITIES The public digital network nodes and services that the AT&T private digital switches and digital terminal products can connect to are as follows: ● DDS ● Digital serving office (DSO), also called a digital toll office, such as a 4ESS ● Digital central office (DCO) such as a 5ESS ● Digital-access[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-7 LEGEND DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY FREQUENCY REFERENCE NOTE: For System 85 and Generic 2, the SCS provides a stratum-4 type-II clock. However, a stratum-3 external clock may be used instead of the SCS. Figure 5-3. Stratum Levels for the Synchronization Hierarchy Syste[...]

5-8 SYNCHRONIZATION OF DIGITAL FACILITIES TN463 CIRCUIT PACK STRATUM 4 HIGH ACCURACY CLOCK BACKPLANE CABLE TO PRIMARY DS1 INTERFACE (NOTE) PRIMARY REFERENCE MAI N PHASE LOCKED LOO P MODULE CONTROL O R TMS CLOCK OSCILLATOR BACKPLANE CABLE TO SECONDARY DS1 INTERFACE (NOTE) SECONDARY REFERENCE OPTIONAL CROSS-COUPLED CABLE FROM DUPLICATED SCS NOTE: The[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-9 a duplicated synchronization system, the same DS1 facility provides the primary and secondary reference for both duplicated halves. Figure 5-5, Duplicated Synchronization Architecture and Cross Coupling, shows a System 85 or Generic 2 with a duplicated architecture and cross-coupled cables. PRIMARY DS1 INTE[...]

5-10 SYNCHRONIZATION OF DIGITAL FACILITIES ● ● ● ● ● ● ● ● ● Loss of signal (LOS) at the (SCS) circuit for more than 200 ms. A switch is made to the high- accuracy clock (HAC) on the SCS by the SCS. A further analysis is then made to determine if the LOS is network related or switch related. A switch to a healthy reference is done[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-11 monitored to make sure that a switch is not attempted to an unhealthy SCS. If the SCS is not duplicated and the HAC is healthy, serious failures cause a switch to the HAC to ensure switch reliability. When the SCS can once more lock onto a DS1 reference, a switch to that reference is performed. Synchroniza[...]

5-12 SYNCHRONIZATION OF DIGITAL FACILITIES TN768 or TN780 CIRCUIT PACK STRATUM 4 ACCURACY CLOCK TONE GENERATOR MISCELLANEOUS TONES EXTERNAL SYNC SOURCE PRIMARY REFERENCE MAIN PHASE- LOCKED LOOP MAIN SYSTEM BUSS EXTERNAL SYNC SOURCE SECONDARY REFERENCE Figure 5-6. Tone-Clock Synchronizer (Nonduplicated, Generic 1) System 75 and Generic 1 Synchroniza[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-13 ● ● ● ● ● Yellow LED is on 2.7 seconds and off 0.3 seconds — the tone-clock synchronizer is in “active” mode and a DS1 is being used as a synchronization reference. Yellow LED is on 0.3 seconds and off 2.7 seconds — the tone-clock synchronizer is in “active” mode and the local oscilla[...]

5-14 SYNCHRONIZATION OF DIGITAL FACILITIES With automatic reference switching enabled, most Generic 1 error counters are decremented by 1 every 15 minutes and initialized to zero on reaching the threshold value. The following conditions cause an offline reference to be restored to online. 1. 2. 3. The system configuration maintenance detects DS1 ci[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-15 references must be from a stratum 3 or stratum 2 source. The same basic considerations that apply to the selection of primary and secondary references also apply to these references. For System 85 and Generic 2, all functions previously performed by SCS synchronization software are now provided external to[...]

5-16 SYNCHRONIZATION OF DIGITAL FACILITIES Figure 5-8. External Clock Private network applications that do not have digital connections to the public network will not provide the Reference 1 and Reference 2 inputs or the clock-input #1 and clock-input #2 circuit packs. These types of network applications are not allowed. For public-network applicat[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-17 TN2131 CIRCUIT PACK COMPOSITE CLOCK OUTPUT #1 COMPOSITE CLOCK CONVERTER SYNC CABLES ALARMS NOTE 1 LOS DETECTION COMPOSITE CLOCK OUTPUT #2 SYNC OUTPUT NOTE 2 NOTES: 1 . 2. Alarm signals are cabled to the cross-connect field. For System 85 and Generic 2, they are then cross-connected and cabled back to the m[...]

5-18 SYNCHRONIZATION OF DIGITAL FACILITIES NETWORK SYNCHRONIZATION AND ENGINEERING The primary goals of network synchronization are: ● ● To keep each digital network node reliable To make sure that each digital termination can meet the network objectives The procedures to achieve these goals include: ● ● ● ● Ensure that all nodes and fa[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-19 DIGITAL SERVING OFFICE EXTERNALLY REFERENCED NODES SYSTEM 85 OR 75 INTERNALLY REFERENCED NODES SYSTEM 85 OR 75 DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE Figure 5-11. External and Internal Reference Levels For externally referenced nodes, the operating company personnel will specify what the[...]

5-20 SYNCHRONIZATION OF DIGITAL FACILITIES If there one or more clocks in the network at the lowest stratum level, the following steps can be taken to determine the clock that should become the network reference clock source. Step 1: If there is only one digital switch in the network, that switch is to be the network reference clock master. Step 2:[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-21 RULE 2: A node may use a facility as a backup only if the node at the other end is not using that same facility as a backup. EXAMPLE FOR RULE 2 Figure 5-13, Proper Use of Backup Facilities, illustrates an application of rule 2 and proper use of a backup facility between nodes A and C. DIGITAL TRANSMISSION [...]

5-22 SYNCHRONIZATION OF DIGITAL FACILITIES DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCY Figure 5-14. Improper Use of Backup Facilities Availability is defined as the ratio of the mean time between failures (the average time between successive system failures abbreviated MTBFs) to the sum of the MT[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-23 Facility rank ordering is generally based on limited technical and operational information. It is recommended that facility selections be based on local field experience where available. In figure 5-14, Improper Use of Backup Facilities, only node C has both a primary and a secondary frequency reference. N[...]

5-24 SYNCHRONIZATION OF DIGITAL FACILITIES DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCE Figure 5-16. Less Than Optimal Diverse Routing RULE 5: Obtaining both primary and secondary synchronization facilities from within the same transmission cable should be minimized. RULE 6: The total number of ca[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-25 DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCE Figure 5-17. Excessive Cascading DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCE Figure 5-18. Minimized Cascading[...]

5-26 SYNCHRONIZATION OF DIGITAL FACILITIES RULE 7: The number of nodes receiving synchronization reference from any given node should be minimized. EXAMPLE FOR RULE 7 Figure 5-19, Excessive Synchronization from One Node, shows an excess of synchronization from one node. If transmission facility linking nodes A-B fails, then nodes B, D, E, and F wil[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-27 DIGITAL TRANSMISSION FACILITY PRIMARY FREQUENCY REFERENCE SECONDARY (BACKUP) FREQUENCY REFERENCE Figure 5-20. Minimized Synchronization from One Node External-Reference Selection Rules There are seven rules for selecting external synchronization references. These rules are described next. RULE 1: Nodes wit[...]

5-28 SYNCHRONIZATION OF DIGITAL FACILITIES AVAILABILITY OF SYNCHRONIZATION SOURCES Misconception 1 Fact 1 Misconception 2 Fact 2 Misconception 3 Fact 3 Misconception 4 Fact 4 The local exchange company (LEC) can always provide the synchronization source. The LECs are not always subscribers to the AT&T reference frequency. Many end offices still[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-29 CONCLUSIONS ON SYNCHRONIZATION Make no assumptions regarding synchronization. Reverify items such as the availability of a synchronization source, the clock stratum, and compatibility of every T1 span. The best guarantee is written confirmation that the local exchange carrier, AT&T Communications, or o[...]

5-30 SYNCHRONIZATION OF DIGITAL FACILITIES Line+Trunk Mode DS1/DMI-BOS (ANN35 or TN767 with TN555) Regarding the use of a line+trunk mode DS1/DMI-BOS for synchronization, the following point should be noted. Since it would be expected that a line+trunk mode DS1 would terminate at a class-5 or higher CO or at another switch, the line+trunk interface[...]

SYNCHRONIZATION OF DIGITAL FACILITIES 5-31 The slip count provided by the interface should also be used in the process of choosing a healthy clock reference. However, when the interface terminates on a D4-channel bank (or equivalent) that is not locked to the AT&T reference frequency for its timing, then the interface should not be used for syn[...]

5-32 SYNCHRONIZATION OF DIGITAL FACILITIES[...]

6. PORT TYPES/INSTALLATION COMPATIBILITIES This chapter describes the operating modes, installation compatibilities, and port types supported by DS1s. Because of differences between Generic 1 and Generic 2 software and hardware, appropriate distinctions are identified and separate sections provided. To date, DS1s have been well accepted. For both G[...]

6-2 PORT TYPES/INSTALLATION COMPATIBILITIES Generic 1, Generic 2, CEM, or D4-channel bank). The other line-interface unit connects to the NCTE and T1 facility. Dedicated data applications, both point-to-point and multipoint, can be connected to the CDM and inserted in selected channels. At the receive end, particular channels may be dropped from a [...]

PORT TYPES/INSTALLATION COMPATIBILITIES 6-3 Application issues about the ANN11C and ANN11E are summarized below. a . It is not necessary to administer a DMI trunk type (108 or 109) or set the “Application Type” in procedure 260 to “DMI-BOS” to use DMI-BOS signaling. To get DMI-BOS, use an ANN11E and administer 24th-channel signaling on the [...]

6-4 PORT TYPES/INSTALLATION COMPATIBILITIES Although the D4-channel bank is compatible with other devices using D4 standards, its most frequent application (from this document’s perspective) is as the interface between a DIMENSION ® and DS1 or T1 facilities. The physical connections from the D4 to the switch are identical to connections used in [...]

PORT TYPES/INSTALLATION COMPATIBILITIES 6-5 interface, they differ in their analog voice interfaces (2- or 4-wire) and in the type of E&M (analog) signaling to which DS1/DMI signaling states are converted (type I, II, or III). A Generic 1 analog tie trunk is a 4-wire type I E&M trunk. Thus, a DS1/DMI tie-trunk port can be considered to be t[...]

6-6 PORT TYPES/INSTALLATION COMPATIBILITIES backplane pins 208 and 224. For J58888N1 List 2 Modification C or later, the carrier is manufactured with the strap always installed on slots 0 and 13. The strap may be field installed on slots 5 and 18, as required. In line-only mode, a DS1 provides the functional equivalent of three analog OPS circuit p[...]

PORT TYPES/INSTALLATION COMPATIBILITIES 6-7 A carrier equipped with two line+trunk DS1s will have four slots available for other port boards in physical slots 3, 8, 16, and 21. Figure 6-2, Physical and Virtual Carrier Slot Relationships, Line+Trunk Mode, shows the carrier slots, physical versus virtual slot locations, and their relationship to line[...]

6-8 PORT TYPES/INSTALLATION COMPATIBILITIES SLOT NUMBERS 0 1 2 3 LEFT HALF CARRIER 5 6 7 8 13 14 15 16 18 19 20 21 RIGHT HALF CARRIER LINE-ONLY ANY EMPTY EMPTY OTHER DS1 OR DM1 PORT INTERFACE CIRCUIT PACK EQUALS EQUALS ACTUAL VIRTUAL VIRTUAL OTHER OPS OPS OPS CIRCUIT #1 #2 #3 PACKS (NOTE) OPS PORTS/CARRIER SLOT OPS #0 OPS #1 OPS #2 OPS #3 OTHERS EQ[...]

PORT TYPES/INSTALLATION COMPATIBILITIES 6-9 CARRIER SLOTS 0 1 2 3 5 6 7 8 1 3 1 4 1 5 1 6 1 8 1 9 2 0 2 1 E M P T Y E M P T Y E M P T Y OTHER ANALOG PORT CIRCUIT PACK LINE+TRUNK MODE O R TRUNK MODE CIRCUIT PACK E M P T Y E M P T Y OTHER ANALOG PORT CIRCUIT PACK EQUALS VIRT L/T #1 VIRT L/T # 2 VIRT L/T # 3 OTHER ANALOG PORT CIRCUIT PACK ACTUAL L/ T [...]

6-10 PORT TYPES/INSTALLATION COMPATIBILITIES Line+Trunk Mode Port Grouping Rules Administration permits assignment of DS1 trunk types in consecutive groups of two. These consecutive groups of two ports are called a port family. The real DS1/DMI and each virtual line+trunk mode slot contain two port families (four ports). The first port family, fami[...]

PORT TYPES/INSTALLATION COMPATIBILITIES 6-11 interface. They differ in their analog voice interfaces (2- or 4-wire) and in what type of E&M (analog) signaling to which the DS1/DMI signaling states are converted (type-I, II, or III). A System 85 analog tie trunk is a 4-wire type-I E&M trunk. Thus, a DS1/DMI tie-trunk port can be considered t[...]

6-12 PORT TYPES/INSTALLATION COMPATIBILITIES Loop-Start CO Trunk Generic 2 does not provide an analog equivalent of a DS1 loop-start CO trunk. It is only available as a digital trunk. Use of the loop-start CO trunk is not recommended because of inherent glare and disconnect supervision problems associated with this trunk type. The DS1/DMI loop-star[...]

PORT TYPES/INSTALLATION COMPATIBILITIES 6-13 channel signaling bits must be passed directly between two DS1/DMI ports without any switch processing software interaction. Any DS1/DMI port, regardless of its operating mode, may be switched into its corresponding transparent mode through administration. Additional details about DS1/DMI port types can [...]

6-14 PORT TYPES/INSTALLATION COMPATIBILITIES Port Grouping Rules There are no port grouping restrictions for DMI-MOS trunks. Supported Port Types The DMI-MOS trunks are used to provide high-speed (up to 64K-bps) data connectivity to a host computer. The DMI-MOS trunks are restricted to two types: Wink-in/wink-out ● Wink-in/auto-out ● The ANN35 [...]

7. ADMINISTRATION OPTIONS AND REQUIREMENTS Administering DS1/DMI/ISDN-PRI services involves configuring the software translations to know what the equipment-carrier configuration and circuit pack types are and what services are to be done. For System 85 R1 through R2V3, switch administration may be done from the system-management terminal (SMT), ma[...]

7-2 ADMINISTRATION OPTIONS AND REQUIREMENTS Generic 1 may be administered from a Manager I terminal or by the Initialization and Administration System (INADS). Generally, the administration procedures consist of executing the proper administration and maintenance commands (from the command line feature set) and translating, in the required order, t[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-3 SYSTEM 85 (R2V1 THROUGH R2V4) This part describes administration options and requirements for System 85 R2V1 through R2V4. Procedure 275 Word 4: ISDN Service — Enable/Disable Procedure 275 is used to translate the system class-of-service (COS) assignments as well as several other miscellan[...]

7-4 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 276 Word 1: Other Feature Groups Procedure 276, word 1, may be displayed to verify which of the optional networking features (such as AAR or DCS) are enabled for the switch. Figure 7-2, Procedure 276 Word 1: Feature Group COS (System 85 R2V4), depicts this procedure. ENHANCED MODE [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-5 ENHANCED MODE - PROCEDURE: 250, WORD: 1 CARRIERS CARRIER LOCATION LOCAL RMI LOCATION 1. 2. 3. Module: Cabinet: Carrier: 12. 13. 14. 15. Module: Cabinet: Carrier: Slot: 4. Carrier Type: MODULE CONTROL 5. 6. 7. 8. I/O: PDS: Duplicated: TMS: 9. Port Electrical Carrier: 10. 11. TMS Electrical Ca[...]

7-6 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 4 V1-V4 Translates a particular type of carrier (such as DS1/MFAT, module control, or TMS) to the equipment location identified by fields 1-3. For DS1/DMI/ISDN-PRI applications the pertinent encodes are: 4 5 6 7 8 9 TMS 0 control TMS 0 growth Module control 0 Module control 1 TMS 1 con[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-7 System 85 R2V1 and V2 only provide trunks. However, R2V3 and V4 provide trunks, analog OPS lines, and DMI-BOS trunks. System 85 R2V4 (and later versions) provides DMI-MOS trunks; refer to table 7-1, DS1 Administration — Channel Versus Line Assignments. Depending on the application type (en[...]

7- 8 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 5 V1-V2 For DS1, 0 is the only choice. V3-V 4 This field is reserved for further use and contains a dash (-). V1-V4 Used for assigning the framing format. The choices are D4 and ESF (previously referred to as F e ). Field 6 The choice of framing format is totally dependent on the equi[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-9 Field 8 V1-V4 Offers the choice of 24th-channel or robbed-bit signaling (RBS). The choice of signaling method used is dependent on the application. The DS1/DMI-BOS applications may be translated for either option. However, ISDN-PRI applications always require that 24th-channel signaling be s[...]

7-10 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 9 V1-V4 Determines which line-coding format will be used to forcibly ensure that the data meets T1-carrier ones-density requirement. The two choices are: ● ● Zero code suppression (ZCS) Bipolar 8 zero code suppression (B8ZS) For a 56K-bps call over a robbed-bit facility, use the A[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-11 Field 10 V1-V4 This options enables (1) or disables (0) switching between the primary, secondary, or internal high-accuracy clock. The decision to switch from one source to the other is normally based on an internal slip count calculation (software record). However, hardware events (such as[...]

7-12 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 slip count of 44 or less and if the secondary and 50% of those DS1s that are enabled for slip enable have reached their maximum slip count of 88, then a switch back to the primary is made. Field 11 V1-V4 Offers the options external loop not available (0) or external loop available (1). The [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-13 Field 14 V3-V4 Field encodes and their descriptions are: 0 Selects the DS1/DMI-BOS channels used for both trunks and lines; the latter is frequently referred to as OPS. Each DS1/MFAT carrier will support a maximum of two DS1s (slots 5 and 18). The ACCUNET switched digital service can be pro[...]

7-14 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Also, the facility cannot be used as a synchronization reference. When a DS1 is administered for lines (OPS), it provides 24 channels that terminate in a remote D4-channel bank, CDM, or their equivalent. Each analog line circuit pack provides eight circuits. Therefore, one DS1/OPS functiona[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-15 Field 15 V4 Only Some applications require that the contents of the D-channel be inverted to guarantee that the minimum ones-density be maintained. This field shows whether the signaling channel is inverted. Field encodes and their descriptions are: (Dash) means ZCS chosen in procedure 260.[...]

7-16 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 262 Word 1: ISDN Board Parameters Procedure 262 is used in System 85 R2V4 and Generic 2 to administer DMI-MOS (ANN35) for other service/facility options (DMI-MOS/ISDN-PRI only). Figure 7-5, Procedure 262 Word 1: ISDN Board Parameters, depicts procedure 262, word 1. ENHANCED MODE -[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-17 Field 5 V4 Only Assigns the interface type or side. The default option is (0) for user side. Alternately, a (1) should be administered for network side. The configuration of the network should be analyzed to determine if the (0) option is appropriate. For MOS-type facilities (such as DMI-MO[...]

7-18 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 7 V4 Only This field will accept encodes within the range of 0 through 126. However, all point-to-point (nonswitched) links, such as an System 85 R2V4 DMI-MOS link to a host computer, must be administered with encode 0. Encodes 1 through 126 are not used at this time. Field 8 Field 9 [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-19 ENHANCED MODE - PROCEDURE: 354, WORD: 3 NPA-NXX ASSIGNMENT 1. 2. 3. 4. NPA-NXX Designator: NPA: NXX: Thousand's Digit: Connected to CC0 ON-LINE enter command: Figure 7-6. Procedure 354 Word 3: NPA – NXX Assignment (System 85 R2V4) Field 1 Field 2 Field 3 This field should be translat[...]

7-20 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 4 of procedure 000, word 4, need not be translated when the switch does not transmit SID or connected number to the network (public or private). If the switch contains more than one office code, multiple NPA/NNX designators may be needed. Figure 7-7, Procedure 000 Word 4: NPA–NXX Pa[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-21 ENHANCED MODE - PROCEDURE: 210, WORD: 2 CONSOLE ASSIGNMENTS - ATTENDANT PARTITIONS 1. 2. 3. 4. 5. Console Number: Attendant Partition: Control: LDN: NPA-NXX Designator: Connected to CC0 ON-LINE enter command: Figure 7-8. Procedure 210 Word 2: Attendant Partition Assignments (System 85 R2V4)[...]

7-22 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options Figure 7-9, Procedure 010 Word 4: Terminal COS Restrictions (System 85 R2V4), depicts procedure 010, word 4. ENHANCED MODE - ROCEDURE: 010, WORD: 4 EXTENSION CLASS OF SERVICE - RESTRICTIONS 1. 2. 3. 4. Class of Service:[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-23 Field 3 This field is used to populate the BC code IE. All endpoints (such as analog lines and DCP voice terminals) must show their information transfer requirements in terms of a BC code. The BC code is the mechanism by which specialized routing is provided for various categories of calls.[...]

7-24 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 100, WORD: 1 TRUNK GROUP TRANSLATION 1. Trunk Group: DIAL ACCESS CODE/TRUNK ID CODE 2. 3. 4. 5. Digit 1: Digit 2: Digit 3: Digit 4: 6 . 7 . 8 . Trunk Type: Dial Access Restriction: Personal CO Line Appearance: DISPLAY ONLY 9. Signaling Type: Connected to CC0 ON-LI[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-25 Incoming ISDN dynamic trunk type 120 calls (to a System 85) may or may not specify an NSF. Generally, incoming calls from the public network will specify an NSF while calls from the private network will not specify an NSF. For example, if the NSF is delivered and it shows an SDN call, then [...]

7-26 ADMINISTRATION OPTIONS AND REQUIREMENT’S — SYSTEM 85 For an ISDN trunk group, a dynamic trunk type (120) can be assigned to the group. This trunk type allows the group to process calls with a different trunk type on a call by call basis. For example, one incoming call over the group may expect station number digits (as does a MEGACOM call)[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-27 ENHANCED MODE - PROCEDURE: 100, WORD: 3 TRUNK GROUPS - MODEM POOLING AND BCCOS 1. Trunk Group: MODEM POOLING DATA RATE 2. 3. 4. 5. 6. 7. 8. 9. 64K: 56K: 19.2K: 9.6K: 4.8K: 2.4K: 1.2K: 300: LOW: 13. 14. 15. 16. 17. Originate Mode: Answer Mode: Modem Type: Clock: First Choice: 18. 19. Test Ty[...]

7-28 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 100, WORD: 3 TRUNK GROUPS - SIGNALING AND OTHER PARAMETERS 1. 2. 3. 4. 5. 6. 7. 8. Trunk Group: Signaling Type: Glare: Retry: Outgoing Maintenance Busy Out Seizure: Incoming Permanent Seizure: Failure Threshold: Optional ISDN Information Inhibited: DISPLAY ONLY 9.[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-29 Field 4 Retry permits multiple attempts to seize a busy trunk from the specified trunk group. This field is primarily applicable for those trunk groups routed over analog facilities and use one of the following trunk types: 41, 42, 43, 46, or 47. Depending on the particular configuration, R[...]

7-30 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 8 Selects whether the optional ISDN information is transmitted and access to other ISDN network features is desired. The optional ISDN IEs include the following: ● ● ● ● ● ● Calling number display *Connected party number *User-to-user information *Called party name *Callin[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-31 ENHANCED MODE - PROCEDURE: 101, WORD: 1 TRUNK GROUP CHARACTERISTICS 1. 2. 3. 4. 5. 6. 7. 8. 9. Trunk Group: Balance: 15. 16. 17. APLT Features Allowed: Disconnect Supervision: Battery Reversal: Incoming Prefix Digit: AVD: DCS: Touch-Tone In: Touch-Tone Out: SMDR Active: AIOD Billing Number:[...]

7-32 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Fields 6-7 Selects in/out touch-tone availability. Field encodes and their descriptions are: 0 1 When only rotary pulses are received via the trunk group When either rotary pulses or tough-tone can be accepted NOTE: The ISDN-PRI applications use the D-channel to transmit and receive dialed [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-33 Field 15 The APLT type services are not applicable in the ISDN-PRI environment. Therefore, for trunk groups using ISDN-PRI facilities, this field is ignored. Refer to Appendix C, Administrative Procedure Summary, for more information about the dynamic 120 trunk types. Field encodes and thei[...]

7-34 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 103, WORD: 1 NETWORK TRUNK GROUP TRANSLATION 1. 2. 3. 4. 5. 6. 7. 8. 9. Trunk Group: Facility Restriction Level: Network Trunk: Main/Tandem: Incoming Tie to AAR/ARS or APLT: Authorization Code Required: Bridge-On Allowed: Trunk Reservation Limit: AAR/ARS Prefix: 1[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-35 Field 15 V4 Only Used for non-ISDN trunk groups that interwork to ISDN trunk groups. Therefore, field 15 only applies to non-ISDN trunk groups. Generally, trunk groups can use both analog and ISDN-PRI (digital) transmission facilities. Any restrictions and compatibility requirements are con[...]

7-36 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 116, WORD: 1 DS1 AND ISDN TRUNK ASSIGNMENTS EQUIPMENT LOCATION 1. 2. 3. 4. 5. Module: Cabinet: Carrier: Slot: Circuit: 6. 7. 8. 9. Trunk Group: Night Terminal: Disable Signaling: AIOD Equipment Number: 10. Interface Endpoint: Connected to CC0 ON-LINE enter command[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-37 TABLE 7-3. DS1/ISDN-PRI Administration — Channel Versus Trunk Assignments DS1 Channel Slot/Circuit DS1 Channel Slot/Circuit 1 */0 13 *+1/0 2 */1 14 *+1/1 3 */2 15 *+1/2 */3 4 16 *+1/3 5 */4 17 *+1/4 6 */5 18 * +1/5 7 */6 19 *+1/6 8 */7 20 *+1/7 */8 9 21 *+1/8 10 */9 22 *+1/9 11 */1O 23 *+[...]

7-38 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 8 Disables a channel’s signaling. Field encodes and their descriptions are: – 0 1 (Dash) used when ISDN is enabled. Used when signaling is enabled. This is the default option (not used with ISDN). Used when signaling is disabled. Use this with dedicated switched connection to disa[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-39 ENHANCED MODE - PROCEDURE: 012, WORD: 1 NAME DATABASE - NAME TO BE DISPLAYED 1 . 2 . 3 . 4 . 5 . 6 . Extension, VDN, or Trunk Group: Type: Display Start: Outgoing Trunk Display: Copy Mode: Extension, VDN, or Trunk Group to Copy or Share: DISPLAY ONLY 7. Characters In Name 8. Shared Primary [...]

7-40 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 4 The main function of this field is to provide some administration control over what is displayed on the voice terminals digital display. Field encodes and their descriptions are: – 0 1 (Dash) for all incoming only trunk groups. Used when the user (extension) does not want the outg[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-41 ENHANCED MODE - PROCEDURE: 012, WORD: 2 NAME DATABASE - ENTRY 1. Segment: CHARATER ENCODES 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Character 1: Character 2: Character 3: Character 4: Character 5: Character 6: Character 7: Character 8: Character 9: Character 10: Connected to CC0 ON-LINE enter comman[...]

7-42 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 012, WORD: 3 NAME DATABASE COMPACTION 1. Compact: DISPLAY ONLY 2. Names That Can Yet Be Assigned: 3. Words Available: 4. Words to Be Gained by Compacting: Connected to CC0 ON-LINE enter command: Field 1 Fields 2-4 Figure 7-18. Procedure 012 Word 3: Name Database ([...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-43 ENHANCED MODE - PROCEDURE: 309, WORD: 1 ARS - ROUTE TABLES 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. ARS Plan: Pattern Number: Preference Number: Trunk Group: Facility Restriction Level: Warning Tone: Distant Area Code (NPA): Send 1 For Toll: Toll Table Index: Number of Digits Deleted: Digit C[...]

7-44 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 309 Word 5: ARS and ISDN Trunk — Network Characteristics This procedure is required for translating ISDN trunk groups into the ARS plan. Figure 7-20, Procedure 309 Word 5: ARS and Transit Network Identifiers (System 85 R2V4), depicts this procedure. ENHANCED MODE - PROCEDURE: 30[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-45 Field 4 Translates ISDN trunk type 120 only. Recall that for ISDN applications the trunk type may be translated as fixed (that is, one specific type) or dynamic (which may include those from the fixed category). Generally, the trunk type selected will depend on the network service or featur[...]

7-46 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Procedure 321 Word 1: AAR Assignments and IXC/ISDN Network Identifier This procedure is used for translating/controlling the AAR feature. Figure 7-21, Procedure 321 Word 1: AAR (System 85 R2V4), depicts the procedure. ENHANCED MODE - PROCEDURE: 321, WORD: 1 AAR - ROUTE TABLES 1. 2. 3. 4. 5.[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-47 Field 10 Specifies either the number (designation) of the interexchange carrier (IXC) or the ISDN Network Service Identifier for the trunk group. The IXC/ISDN network identifier enables the switch to provide equal access capability by populating either the NSF IE or the Transit Network Sele[...]

7-48 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 Field 1 Specifies the AAR pattern number. Permitted encodes are 1 through 640. Field 2 Specifies the AAR preference number. Permitted encodes are sequential numbers within the range of 1 through 16. Field 3 Translates the ISDN trunk type. Recall that for ISDN applications the trunk type may[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 7-49 ENHANCED MODE - PROCEDURE: 107, WORD: 1 ATMS - TERMINATING TEST LINE ASSIGNMENT 1. 2. Trunk Group: Test Line Type: TTL TELEPHONE DIGITS 3. 4. 5. 6. 7. 8. 9. 10. Digit 1: Digit 2: Digit 3: Digit 4: Digit 5: Digit 6: Digit 7: Digit 8: 11. 12. 13. 14. 15. 16. 17. 18. Digit 9: Digit 10: Digit 1[...]

7-50 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85 ENHANCED MODE - PROCEDURE: 108, WORD: 1 ISDN TERMINATING TEST LINE ASSIGNMENT 1. Trunk Group: TERMINATING TEST LINE TELEPHONE DIGITS 2. 3. 4. 5. 6. 7. 8. 9. Digit 1: Digit 2: Digit 3: Digit 4: Digit 5: Digit 6: Digit 7: Digit 8: 10. 11. 12. 13. 14. 15. 16. 17. Digit 9: Digit 10: Digit 11: D[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-51 GENERIC 2 Depending on whether the switch provides private network ISDN service or public network ISDN services, whether the switch functions as an endpoint or as a tandem node, will determine whether other features should be administered before ISDN-PRI. Primarily, these other features inc[...]

7-52 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 14 For Generic 2, field 14 must always be translated. Field encodes and their descriptions are: – (Dash) required when ISDN is not provided. Current policy is to always ship ISDN-PRI software with the switch. However, the administration software still provides the option to assign t[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-53 Procedure 250 Word 1: SC/DS1 — Carrier Designation This procedure is used to assign the equipment carriers to a module and cabinet. Additionally, it is used to assign the type of carrier, the carrier port electrical number, and whether the carrier is equipped with an SC. Figure 7-27, Proc[...]

7-54 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 4 Translates a particular type of carrier (such as DS1/MFAT, module control, or TMS) to the equipment location identified by fields 1-3. For DS1/DMI/ISDN-PRI applications, field encodes and their descriptions are: 2 3 4 5 6 7 8 9 Universal Module Control 0 Universal Module Control 1 T[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-55 ENHANCED MODE - PROCEDURE: 260, WORD: 1 DS1/ISDN AND RG CIRCUIT PACK ASSIGNMENTS EQUIPMENT LOCATION SC 1. 2. 3. 4. Module: Cabinet: Carrier: Slot: 12. 13. Equipment Type: SC Reference: SIGNALING 14. 15. 16. 17. 18. 19. Application: Bit Inversion: Link Type: SA/FX: Loop Length: E Bit: 6. 7. [...]

7-56 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Fields 1-4 Assigns the circuit pack to an equipment location. Table 7-6, Equipment Parameters and Permitted Translation Encodes, depicts the permitted ranges for these encodes. TABLE 7-6. Equipment Parameters and Permitted Translation Encodes Equipment Traditional Universal Parameter Module[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-57 Field 7 This field is functionally equivalent to the Per-Channel Signaling and common channel signaling options used with System 85 R2V4. However, the terms have been changed to facility associated signaling (FAS) and NFAS. This field is used to specify the method used to constructed signal[...]

7-58 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 9 Assigns the line coding format that will be used to forcibly ensure that the data meets T1-carrier ones-density requirement. Field encodes and their descriptions are: ● ● Zero Code Suppression (ZCS) Bipolar 8 Zero Code Suppression (B8ZS). The ZCS line-coding format (restricted) [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-59 Field 10 Offers the options slip enable (1) or disable (0). This option enables/disables collection of slip data to support excessive slip rate based on switching between the primary, secondary, or internal high-accuracy clock. The decision to switch from one source to the other is normally[...]

7-60 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Criteria for Switching Back to the Primary Field 11 Field 12 At the end of the 1-hour interval, the slip count is analyzed. If the primary slip count is less than 2, then a switch back to the primary is made. Also, if the primary has a slip count of 44 or less and if the secondary and 50% o[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-61 Field 13 Assigns whether a DS1 facility (translated in field 12) is to be used as the primary or secondary synchronization source to the switch. Field encodes and their descriptions are: 0 1 2 Assigns that the facility is not used as a synchronization source Assigns that the facility is the[...]

7-62 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 14 Field encodes and their descriptions are: 0 1 Assigns that the DS1/DMI-BOS channels can be used for both trunks and lines (MIXED); the latter is frequently referred to as off-premises stations (OPS). Assigns that the interface is used to provide DMI-BOS trunks. The DMI-BOS trunk gr[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-63 Field 15 Some applications require that the contents of the signaling channel or the ISDN- PRI D-channel be inverted to guarantee that the minimum ones density be maintained. This field shows whether the signaling channel is inverted or not. Field encodes and their descriptions are: – 0 1[...]

7-64 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 18 Loop length refers to the total cable distance between the switch and the NCTE, CDM, BCM32000, DSX-1 cross-connect, and T1 office repeater. Traditional modules may contain the ANN11 and/or ANN35 circuit packs. Both circuit packs contain DIP switches for setting the compensation val[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-65 Field 20 This display-only field serves to show which cables contain which synchronization cables. Procedure 262 Word 1: Additional DMI-MOS/ISDN-PRI Facility Options Procedure 262 is used to administer the ANN35 and TN767 circuit packs. Figure 7-29, Procedure 262 Word 1: Additional DMI-MOS/[...]

7-66 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 6 Assigns the interface type or side. The default option is (0) for user side. Alternately, a (1) should be administered for network side. The configuration of the network should be analyzed to determine whether the (0) option is appropriate. For MOS facilities (such as DMI-MOS and IS[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-67 Field 9 The field accepts encodes from 0 through 255, which correspond to 1 second intervals for a maximum elapsed time of 4 minutes and 15 seconds. The default value for this T203 timer is 30 (30 seconds). This timer functions to monitor the facility data link and specifies the maximum tim[...]

7-68 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 ENHANCED MODE - PROCEDURE: 262, WORD: 2 ISDN NFAS/D-CHANNEL BACKUP 1. D-Channel Group Number: PRIMARY D-CHANNEL EQUIPMENT LOCATION 2. 3. 4. 5. Module: Cabinet: Carrier: Slot: BACKUP D-CHANNEL EQUIPMENT LOCATION 6 . 7. 8. 9. Module: Cabinet: Carrier: Slot: DISPLAY ONLY 10. Number of Trunks A[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-69 Procedure 262 Word 3: ISDN-PRI Codeset Map Assignments Depending on the terminating switch it may be necessary to administer a Codeset Map Assignment and convert from one codeset or codepoint to a different codeset or codepoint. This administration assignment is required for ISDN-PRI links [...]

7-70 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 7 Assigns whether hyperactivity management will be enabled for the ISDN-PRI link. Hyperactivity is defined as erratic behavior by the D-signaling channel. Typically, a hyperactive link will generate an excessive amount of meaningless traffic. Excessive D-channel traffic may overload t[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-71 Procedure 280 Word 1: ISDN-PRI Receive/Transmit Codeset Mapping This procedure is used to translate Codeset Mapping parameters. Figure 7-32, Procedure 280 Word 1: ISDN-PRI Receive/Transmit Codeset Mapping (Generic 2), depicts this procedure. ENHANCED MODE - PROCEDURE: 280, WORD: 1 ISDN CODE[...]

7-72 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 3 Specifies a mapped from codeset number. Permitted encodes are 0 to 7. These numbers correspond to the respective codesets on a number-per-number basis. NOTE: Currently, codeset 1 through codeset 5 are reserved for future use. Thus, only encodes 6 and 7 are applicable for the codeset[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-73 NOTE: This word need not be translated unless the application requires that SID or the connected number be transmitted to the network. ENHANCED MODE - PROCEDURE: 354, WORD: 3 NPA-NXX ASSIGNMENT 1. 2. 3. 4. NPA-NXX Designator: NPA: NXX: Thousand's Digit: Connected to CC0 ON-LINE enter c[...]

7-74 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 000 Word 4: NPA-NXX Index Designator Depending on how the switch is used, procedure 000, word 4, may or may not be translated. Specifically, word 4, field 4, is used for partitioning, ISDN, or both, and must be translated when: a . The switch transmits SID or connected number to t[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-75 Field 3 Assigns the extension partition identification for the tenant services feature. This number associates the single or block of extension numbers to a particular ISDN facility (NPA-NXX Designator). Associates an NPA-NXX Designator with the previously defined extension. Field 4 Procedu[...]

7-76 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 3 Assigns the one console in the attendant partition that will be the controlling console. All other members of this group must have control denied. Field encodes and their descriptions are: 0 1 For all but the controlling console Only for the controlling console Field 4 Field 5 Assig[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-77 ENHANCED MODE - PROCEDURE: 014, WORD: 1 BEARER CAPABILITY CLASS OF SERVICE - CALL OPTIONS 1. 2. 3. Bearer Capability COS: Transport Mode: Information Type: DEFAULT CAPABILITIES 14. 15. 16. Transport Mode: Information Type: Bearer Capability: CALL TYPES AND ACTION TAKEN 4. 5. 6. 7. 8. 9. Voi[...]

7-78 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Fields 4-13 The translation parameters administered for fields 4 through 13 determine what actions the switch will take for the BCCOS specified in field 1. Regarding Generic 2, it is important to remember that the administration (of the BCCOS) determines when a modem pool member is added an[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-79 ENHANCE MODE - PROCEDURE: 014, WORD: 2 BEARER CAPABILITY CLASS OF SERVICE - DATA OPTIONS 1. Bearer Capability COS: DATA RATE 2. 3. 4. 5. 6. 7. 8. 9. 10. 64000 bps: 56000 bps: 19200 bps: 9600 bps: 4800 bps: 2400 bps: 1200 bps: 300 bps: Low Speed: 11. 12. 13. 14. Synchronous: Duplex: Clock: D[...]

7-80 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options Figure 7-38, Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options, depicts this procedure. ENHANCED MODE - PROCEDURE: 010, WORD: 4 EXTENSION CLASS OF SERVICE - RESTRICTIONS 1. 2. 3. Class of Service: [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-81 Field 3 All endpoints (such as analog lines and DCP voice terminals) must show their information transfer requirements in terms of a BC code. The BC code is the mechanism by which specialized routing is provided for various categories of calls. NOTE: Once the BC code is assigned, it is fixe[...]

7-82 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 ENHANCED MODE - PROCEDURE: 100, WORD: 1 TRUNK GROUP TRANSLATION 1. Trunk Group: DIAL ACCESS CODE/TRUNK ID CODE 2 . 3 . 4 . 5 . Digit 1: Digit 2: Digit 3: Digit 4: 6. 7 . 8 . 9. Trunk Type: Dial Access Restriction: Personal CO Line Appearance: Public Network Access/Egress: DISPLAY ONLY 10. S[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-83 Field 6 Defines the trunk type of a specific trunk group. The ISDN-PRI facilities may be used to support several different trunk types. These may include both conventional trunk types as well as the ISDN-dynamic trunk type. An important point to remember is that the particular service appli[...]

7-84 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 This trunk type allows flexibility in processing calls as opposed to a fixed static trunk type. Both an AAR/ARS prefix digit (procedure 103) and a DID additional digit (procedure 101) can be administered for ISDN dynamic trunk groups. (This cannot be done for any other type of trunk group.)[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-85 ENHANCED MODE - PROCEDURE: 100, WORD: 2 TRUNK GROUP - MODEM POOLING AND BCC 1. 2. Trunk Group: Bearer Capability Class of Service: MODEM POOLING 3. 4. 5. 6. Originate Mode: Answer Mode: Modem Type: First Choice: 7. Test Type: Connected to CC0 ON-LINE enter command: Field 1 Field 2 Figure 7-[...]

7-86 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 100 Word 3: ISDN Trunk Group Signaling Options The trunk type and signaling type attributes are translated as individual parameters. Figure 7-41, Procedure 100 Word 3: ISDN Trunk Group Signaling Options, depicts this procedure. ENHANCED MODE - PROCEDURE: 100, WORD: 3 TRUNK GROUPS [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-87 Field 4 Retry permits multiple attempts to seize a busy trunk from the specified trunk group. This field is primarily applicable for those trunk groups routed over analog facilities and uses trunk types 41, 42, 43, 46, or 47. Depending on the particular configuration, retry may or may not b[...]

7-88 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 8 Permits user control of whether the optional ISDN information is transmitted and whether access to other ISDN network features is desired. ● ● ● ● ● ● - 0 1 Field 9 The optional ISDN IEs include the following: ● Calling number display *Connected party number *User-to-u[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-89 ENHANCED MODE - PROCEDURE: 101, WORD: 1 TRUNK GROUP CHARACTERISTICS 1. 2. 3. 4. 5. 6. 7. 8. 9. Trunk Group: Balance: Battery Reversal: Incoming Prefix Digit: DCS: Touch-Tone In: Touch-Tone Out: CDR Active: AIOD Billing Number: TIMED RECALL 10. 11. Time: Level: 12. 13. 14. 15. 16. CDR Variab[...]

7-90 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 8 Assigns or not assign the trunk group to SMDR record keeping. Field encodes and their descriptions are: 0 1 2 Trunk group usage not applicable for SMDR recording Trunk group usage will be recorded by SMDR Trunk group usage will be recorded, account code is required Fields 9-11 Not u[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-91 ENHANCED MODE - PROCEDURE: 103, WORD: 1 NETWORK TRUNK GROUP TRANSLATION 1. 2. 3 . 4 . 5 . 6 . 7 . 8 . 9 . Trunk Group: Facility Restriction Level: Network Trunk: Main/Tandem: Incoming Tie to AAR/ARS or APLT: Authorization Code Required: Bridge-On Allowed: Trunk Reservation Limit: AAR/ARS Pr[...]

7-92 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 116 Word 1: DS1/DMI/ISDN-PRI Trunk Assignments For more information, see the chapter in this book entitled Port Types and Installation Compatibilities. Each analog trunk circuit pack provides four circuits that are administered by using procedure 150. Conversely, each DS1 provides[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-93 TABLE 7-10. DS1/ISDN-PRI Administration — Channel Versus Trunk Assignments DS1 Channel Slot/Circuit DS1 Channel Slot/Circuit 1 5/0 or 18/0 13 0/0 or 13/0 2 6/0 or 19/0 14 1/0 or 14/0 3 7/0 or 20/0 15 2/0 or 15/0 4 5/1 or 18/1 16 0/1 or 13/1 5 6/1 or 19/1 17 1/1 or 14/1 6 7/1 or 20/1 18 2/[...]

7-94 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Field 10 0 1 2 Field 11 Assigns the function of the terminating endpoint. Field encodes and their descriptions are: Another customer premises switch A private network connection to a host computer Public network connections Translates the D-channel group number. These numbers should be coor[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-95 Field 1 Assigns either an extension number, vector directory number, or trunk group. Field encodes and their descriptions are: ● ● Field 2 0 1 Field 3 Field 4 – 0 1 Field 5 0 1 Field 6 000 through 99999, for extension and directory numbers. Whether the number is three, four, or five d[...]

7-96 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 ENHANCED MODE - PROCEDURE: 012, WORD: 2 NAME DATABASE - ENTRY 1. Segment: CHARACTER ENCODES 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . Character 1: Character 2: Character 3: Character 4: Character 5: Character 6: Character 7: Character 8: 10. 11. Character 9: Character 10: Connected to CC0 ON-LINE ent[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-97 ENHANCED MODE - PROCEDURE: 012, WORD: 3 NAME DATABASE COMPACTION 1. Compact: DISPLAY ONLY 2. 3. 4. Names That Can Yet Be Assigned: Words Available: Words to Be Gained by Compacting: Connected to CC0 ON-LINE enter command: Field 1 Fields 2-4 Figure 7-47. Procedure 012 Word 3: Name Database ([...]

7-98 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 ENHANCED MODE - PROCEDURE: 279, WORD: 1 NETWORK-SPECIFIC FACILITY 1. ISDN Network Service Value: ISDN NETWORK DEFINITION 2. 3. 4. Paramaterized - Binary: Feature - Service: Facility Coding Value: PARAMETERS 5. 6. 7. 8. 9. Parameter 1: Parameter 2: Parameter 3: Parameter 4: Parameter 5: 10. [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-99 TABLE 7-11. Network Services/Network Features NAME Network Parameterized (0) Feature (0) Facility Service or or Coding Value Binary (1) Service (1) Value Out-WATS band 33-288 0 1 1 SID preferred 320 1 0 1 ANI preferred 320 1 0 1 SID only 322 1 0 3 ANI only 323 1 0 4 Operator handled 324 1 0[...]

7-100 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 309 Word 1: ARS Route Tables This procedure is used for translating/controlling the Automatic Route Selection feature. Figure 7- 49, Procedure 309 Word 1: ARS Route Tables, depicts this procedure. ENHANCED MODE - PROCEDURE: 309, WORD: 1 ARS - ROUTE TABLES 1. 2. 3. 4. 5. 6. 7. 8. [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-101 Field 12 Specifies the number (designation) of the interexchange carrier (IXC)/ISDN Network Identifier for this trunk group. Permitted field entries may be any number within the range of 0 through 999. NOTE: The IXC/ISDN network identifier enables the switch to provide equal access capabil[...]

7-102 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Fields 1-3 The ISDN-PRI does not place any new or additional considerations on translating these fields. The codes and digits translated are generally dependent on each ARS plan and other switch and network considerations. Field 4 Translates the ISDN trunk type. The network SERVICE applica[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-103 ENHANCED MODE - PROCEDURE: 321, WORD: 1 AAR - ROUTE TABLES 1. 2. 3. 4. 5. 6. 7. 8. 9. Pattern Number: Preference Number: Trunk Group: Facility Restriction Level: Warning Tone: Off Net: Number of Digits Deleted: Digit Collect (DC) Signal Ignored: 0xxx Allowed: 10. IXC ISDN Network Identifie[...]

7-104 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 321 Word 5: AAR–ISDN and Other Feature Parameters This procedure is required for translating ISDN trunk groups into the AAR plan. Figure 7-52, Procedure 321 Word 5: AAR–ISDN and Other Feature Parameters, depicts this procedure. ENHANCED MODE - PROCEDURE: 321, WORD: 5 AAR - IS[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 7-105 Field 5 Assigns a BCCOS to the preference. Permitted numbers include any previously defined BCCOS from procedure 014, word 1. However, BCCOS = 4 is the recommended option. Procedure 107 Word 1: ISDN Trunk Verification by Terminal, Attendant, and ATMS This procedure must be translated to su[...]

7-106 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2 Procedure 108 Word 1: ISDN Trunk Group TTL Number (Digits) This procedure is used to assign the line number that identifies the particular B-channel used for ISDN-PRI testing purposes. This test line number must be assigned for both private and public network configurations. Whether more t[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-107 SYSTEM 75 (R1V2 AND R1V3) System 75 has the same facility considerations (framing, signaling, line coding format, etc.) as System 85 or Generic 2 and many similar equipment considerations (both require an additional clock circuit pack for synchronization). The main differences are in terms[...]

7-108 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 Location A display-only field specifying the carrier and slot of a DS1. Name The name as shown on the network diagram. Line Refers to the distance between the switch and the NCTE, CDM, CEM, DSX-1 Compensation cross-connect, T1 office repeater, or other equipment. The compensation setting i[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-109 Signaling The default option is common-channel. This option is the same as 24th-channel or Mode AVD for System 85. The alternate choice is robbed-bit. The choice of signaling mode used is dependent on the application. Common-channel signaling multiplexes all signaling information for chann[...]

7-110 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 Maintenance Options or Parameters Slip This option enables (y) or disables (n) switching between the primary, secondary, Detection and internal high-accuracy clock. The decision to switch from one source to the other is based on an internal slip count calculation. NOTE: Those DS1/T1 facili[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-111 SYNCHRONIZATION PLAN Page 1 of 1 SYNCHRONIZATION SOURCE (DS1 circuit pack location) Primary: __ _ Secondary: ___ DS1 CIRCUIT PACKS Location Name Sli p Location Nam e Slip __ _ __ _ __ _ __ _ _______________ _______________ _______________ _______________ _ _ _ _ __ _ __ _ __ _ __ _ _______[...]

7-112 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 Trunk Group/Trunk Group Members For System 75 R1V2 and R1V3, there are three applications for a DS1 (tie and DMI); refer to table 7-6, Equipment Parameters and Permitted Translation Encodes. The DS1 tie trunks are defined by using Page 1 of the TRUNK GROUP screen; this is the same as for a[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 7-113 Trunk Type Establishes the physical type of incoming and outgoing trunks. For tie trunk (in/out) applications, field encodes and their descriptions are: ● Auto ● Immed-start ● Wink-start ● Delay-dial Figure 7-58, Trunk Group Screen, Page 2, depicts this procedure. GROUP MEMBER ASSI[...]

7-114 ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 75 The DS1/DMI trunks are defined by using the TRUNK GROUP screen. This screen is somewhat equivalent to System 85 procedure 260, field 14, encode 1. Figure 7-59, Trunk Group Screen, Page 1 (DMI), depicts this procedure. TRUNK GROUP Page 1 of 5 Group Number: Group Name: Direction: Dial Access[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-115 GENERIC 1 Generic 1 has the same DS1 facility considerations (such as framing, signaling, line coding format) as System 75. It also requires the additional clock circuit pack for synchronization. The main significant difference between a System 75 and Generic 1 is support of the TN767 circ[...]

7-116 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 DS1 CIRCUIT PACK Page 1 of 1 Location: Line Compensation: Framing Mode: DMI-BOS? __ _ 1 es f y Name: Zero Code Suppression: Signaling Mode: ____________ zcs common-chan MAINTENANCE PARAMETERS Slip Detection? n Remote Loop-Around Test? n Figure 7-60. DS1 Circuit Pack Screen, Common-Channel [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-117 Location A display-only field specifying the carrier and slot of the DS1 Interface. Name The name as assigned on the network diagram. Line Refers to the distance between the switch and the network channel-terminating equipment (NCTE), CDM, CEM, DSX-1 cross-connect, T1 office repeater, or o[...]

7-118 ADINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Signaling The default option is common-channel. This option is the same as 24th-channel or Mode AVD for System 85. The alternate choices are ISDN-PRI and robbed-bit. If ISDN-PRI is optioned, then the DMI-BOS field disappears and the Connect field appears. The choice of signaling mode used i[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-119 Interface This field is not available unless the Connect field is translated pbx. Field encodes and their descriptions are: ● ● user (default option) network NOTE: For ISDN-PRI private network connections, additional care must be exercised in defining user and network sides. Specifical[...]

7-120 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 SYNCHRONIZATION PLAN Page 1 of 1 SYNCHRONIZATION SOURCE (DS1 circuit pack location) Primary: __ _ Secondary: __ _ DS1 CIRCUIT PACKS Location Name Slip Location Name Slip __ _ __ _ __ _ __ _ __ _ __ _ __ _ __ _ __ _ __ _ _______________ _______________ _______________ _______________ ______[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-121 Trunk Group/Trunk Group Members — DS1 Trunk Applications For DS1/DMI applications the TN722_ circuit pack emulates three categories of trunk types, while the TN767 circuit pack emulates three additional trunk types; refer to table 6-1, Supported Digital Facilities. DS1/DMI trunking appli[...]

7-122 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 BCC This field is only displayed when ISDN-PRI is enabled on the SYSTEM PARAMETERS CUSTOMER-OPTIONS screen and when the Communications Type field is administered avd or data. Trunk Type Establishes the physical type of incoming and outgoing trunks. For tie trunk (in/out) applications, fiel[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-123 TRUNK GROUP Page 2 of 9 ACA Assignment? Short Holding Time(secs.): MIS Measured? n 10 n Long Holding Time(hours): Short Holding Threshold: 1 15 Internal Alert? n Used for DCS? Maintenance Tests? Suppress # Outpulsing? n y n PBX ID: 1 Data Restriction? n Figure 7-64. Trunk Group Screen, Pag[...]

7-124 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Port This field associates each trunk group member to a particular network (1 or 2), carrier (A-E), slot (01-20), and circuit (01 -24). To keep things simple, try to match trunk group member and DS1 channel assignments (for example, trunk group member 1 on channel 1 Name Night Typically, t[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-125 DATA MODULE Page 1 of 1 Data Extension: ______ Type: procr-infc Physical Channel: __ _ Name: _______________ COS: 1 COR: 1 Maintenance Extension: _____ ABBREVIATED DIALING List1: ____________ HOT LINE DESTINATION Abbreviated Dialing Dial Code (from above list): _ _ ASSIGNED MEMBERS ( Stati[...]

7-126 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 PROCESSOR CHANNEL ASSIGNMENT Page 1 of 4 Proc Chan Interface Link Chan Remote Proc Chan Appl. Priority Machine-ID 1: 2: 3: 4: 5: 6: 7: 8: 9: ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ ______ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-127 INTERFACE LINKS Page 1 of 1 Link Enable Est Conn PI Ext Destination Digits Brd DTE/ DCE Prot Identification 1: 2: 3: 4: 5: 6: 7: 8: 9: y n n n n n n n n n n n n n n y _ _ _ _ _ _ _ _ _ _ _ _ _ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____ _ ____[...]

7-128 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Trunking Considerations — ISDN-PRI Applications It is necessary to determine those types of ISDN-PRI network services desired before attempting to build the ISDN-PRI trunk groups. Some of the more significant considerations should include the following: NOTE: An ISDN-PRI trunk group is c[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-129 accommodated with a single trunk group, and that trunk group is provided with allocation and scheduling controls, then significant trunking efficiencies are realized by distributing the traffic over the total number of available trunks. CBC Usage Allocation Plans control the trunk groups s[...]

7-130 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Facility The ISDN-PRI specification further requires that each service or feature be Coding identified as a: ● ● ● ● Parameterized Service Parameterized Feature Binary Service Binary Feature The facility coding values, listed on the NETWORK-FACILITIES screen, provide this identific[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-131 Only the new ISDN-PRI service application fields or those fields that require special or additional considerations are mentioned here. Group Type Dial Access Night Service Service Type Usage Alloc Far End Test No For ISDN-PRI service applications this field should be translated isdn-pri. N[...]

7-132 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Send Display/TCM in Codeset 6/7 Max Message Size to Send This field maps the display information (codepoint 8) and the TCM information (codepoint 40) to codeset 6 or codeset 7, depending on whether a 6 or a 7 is translated. The distant switch will determine which should be translated. Spec[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-133 TRUNK FEATURES Page 2 of 11 ACA Assignment? Short Holding Time (secs.): MIS Measured? Used For DCS? Maintenance Tests? n 10 n n y Long Holding Time (hours): Short Holding Threshold: Internal Alert? PBX ID: 1 Data Restriction? Send SID? Send Name? 1 15 n n n n Service/ Feature Called Len Ca[...]

7-134 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Send Name This field determines whether the calling (originating) party’s administered name is sent to the network for outgoing calls and whether the connected (answering) party’s name is sent to the network for incoming calls. Field encodes and their descriptions are: y n Enable this [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-135 Called Generally, this field only specifies some of the leading digits that are contained in Number the called-party number IE. The digits received must match, on a digit-per-digit basis, what is administered in this field. Field encodes and their descriptions are: ● ● A series of numb[...]

7-136 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Insert The digits inserted before the Called Party Number IE. This specifies the digits prepended to the front of the remaining digits after any (optional) digit deletion has been performed. The resultant number formed from digit deletion/insertion is used to route the call, providing that[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-137 ● Called Number field is specified with M leading digits, where M is a number of digits less than N (for example, the three digits 855). NOTE: The screen that follows these case examples depicts a line entry (Service/Feature, Called Len, Called Number,...) for each case. The first (top) [...]

7-138 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Case 4 ● ● ● Service/Feature field is specified (for example, mega800). Called Len field is not specified (that is, left blank). Called Number field is not specified (that is, left blank). Application for Case 4 being selected Assume the switch receives a MEGACOM 800 call that has a [...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-139 ● ● Called Len field is not specified (that is, left blank). Called Number field is not specified (that is, left blank). NOTE: Case 8 is the least restrictive (nonrestrictive) and will match all calls not handled by any other case. Applications for Cases 5-8 Cases 5-8 are similar to Ca[...]

7-140 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 NOTE: Although each usage allocation plan may contain up to 10 entries, a given Service/Feature may only be listed once per plan. Many other scenarios may be developed for applying a plan. Various reasons may be used. Figure 7-73, Trunk Group Screen, Page 3 (ISDN-PRI), depicts this procedu[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-141 Min# Chan This field reserves a specified number of trunk group members that are to always be available to the associated Service/Feature. Permitted numbers are any number within the range of 0 to 99. NOTE: For each allocation plan, the sum of the Min# Chan columns must be less than the to[...]

7-142 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 CBC TRUNK GROUP USAGE ALLOCATION PLAN ASSIGNMENT SCHEDULE Page 4 of 11 Usage Method: Fixed? Scheduled? y n Allocation Plan Number: 1 Usage Allocation Plan Activation Schedule: Act Time Plan # Act Time Plan # Act Time Plan # Act Time Plan # Act Time Plan # Act Time Plan # Sun Mon Tue Wed Th[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-143 Act Time Specifies the time that the associated usage allocation plan will become effective. Time must be specified in 24-hr format. Permitted entries are 00:00 through 23:59. Plan # NOTE: Each day of the week must have at least one entry, but may have as many as six transition times. A tr[...]

7-144 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Port This field associates each trunk group member to a particular network (1 or 2), carrier (A-E), slot (01-20), and circuit (01-24). To keep things simple, try to match trunk group member assignments with B-channel assignments (for example, trunk group member 1 on channel 1). Name Typica[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-145 Permitted entries are single digit numbers less than or equal to the number administered in the Page Length field of the DIAL PLAN RECORD screen. For example, if the Page Length field is translated five (meaning a five digit numbering plan), then this field may contain the number 1, 2, 3, [...]

7-146 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 SID PREFIX TABLE Page 1 of 5 Ext Len Ext Code SID Prefix Ext Len Ext Code SID Prefix Ext Len Ext Code SID Prefix 5 5 _ _ _ _ _ _ _ _ _ _ _ _ _ _ 31 41 _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ 2012353000 20123 __________ __________ __________ _____[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-147 ROUTING PATTERNS Page 1 of 1 Pattern Number: __ Pattern Assignments (Enter Up To 6) Grp. No. FRL NPA Prefix Mark Toll List No. Del Digits Inserted Digits IXC 1. 2. 3. 4. 5. 6. __ _ __ _ __ _ __ _ __ _ __ _ _ _ _ _ _ _ __ _ __ _ __ _ __ _ __ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ______[...]

7-148 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 Prefix Mark This field is only used for public network (ARS) applications. The Prefix Mark relates to the ARS Prefix 1 Required? field on the DIAL PLAN RECORD screen. If the ARS Prefix 1 Required? field is translated y, then (for certain type of calls) it may be necessary to transmit the o[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-149 BCC Values Each routing pattern preference (1 through 6) has an associated BCC Value field. Therefore, when a preference is translated, the associated BCC must also be translated. A trunk group preference must be valid for one or more BCC values. Permitted entries are y to enable the value[...]

7-150 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 HUNT GROUP Page 1 of 6 Group Number: Group Name: Security Code: Queue? ISDN Caller Disp: _ _ _______________ ____ Group Extension: Coverage Path: Message Center: ____ __ _ none ____ Group Type: used COR: 1 ACD? n n Night Service Destination: ________ Figure 7-79. Hunt Group Screen Only the[...]

ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1 7-151 TERMINATING EXTENSION GROUP Page 1 of 1 Group Number: Group Name: Security Code: ISDN Caller Display: __ _______________ ______ ______ Group Extension: Coverage Path: COR: ___ _ ___ 1 _ GROUP MEMBER ASSIGNMENTS 1: 2: Ext ___ _ ___ _ Name 3: 4: Ext ____ ____ Name Figure 7-80. Terminating Ex[...]

7-152 ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 1[...]

8. MAINTENANCE AND ALARMS This chapter describes general maintenance items. For solutions to other problems not covered in this chapter or for additional information about a specific problem, refer to DEFINIT Y ® Communications System Generic 2 and System 85 Maintenance Procedures (555-104-117) and DEFINITY Communications System Generic 2 and Syst[...]

8-2 MAINTENANCE AND ALARMS maintenance activities. Digital circuit packs are able to detect and report errors occurring on both the circuit pack itself and on the digital transmission facility. The circuit packs are also able to restore service automatically when and if any detected faults should clear. For ISDN-PRI, layer-3 protocol defines a set [...]

MAINTENANCE AND ALARMS 8-3 When procedure 620 is used the following points should be understood: ● ● ● Procedure 620 consists of five separate tests, identified as tests 1 through 5. Tests 1, 2, and 3 may be done without affecting service. Tests 4 and 5 affect service. Test 1 checks all DS1s or DMIs for the presence of any transmission facili[...]

8-4 MAINTENANCE AND ALARMS ● ● Tests 4 and 5 will light the red LED on the circuit pack when facility errors cause procedure 620 to fail. Depending on the type of errors, other LEDs may be in their alarm state. However, the circuit pack should not necessarily be replaced, because pulling the circuit pack may cause other facility errors to be in[...]

MAINTENANCE AND ALARMS 8-5 3 Demand maintenance busy (busy-out from a procedure) 4 Auto maintenance busy (busy-out from call processing) 5 Far-end maintenance busy 6 Trunk in transitory state (T-limbo) Additional trunk status is available in field 10; for example, if test status = 5, then protocol negotiation is taking place. Summary of Generic 2 M[...]

8-6 MAINTENANCE AND ALARMS GENERIC 1 MAINTENANCE CAPABILITIES AND CONCERNS Generic 1 provides the same functional maintenance capabilities (such as error detection, error logging, error testing, and alarm reporting) as Generic 2. However, because of hardware and software differences and because Generic 1 uses the Manager rather than the Manager ter[...]

MAINTENANCE AND ALARMS 8-7 Summary of Generic 1 Maintenance Capabilities Since Generic 1 implements the same DS1, DMI, and ISDN-PRI protocols as Generic 2, both switches provide the same maintenance capabilities. Since Generic 1 DS1s provide conprehensive detection capabilities, the switch usually detects errors caused by network facilities even th[...]

8-8 MAINTENANCE AND ALARMS Facility Alarms There are several types of facility alarms that may arise. These are briefly described next. Excessive Slips Data received from a DS1 facility is stored (clocked) into buffers on the circuit pack using a clock signal derived from the received signal. Data is read from the same buffers using a clock derived[...]

MAINTENANCE AND ALARMS 8-9 One frequent cause of this alarm is an incorrect setting of the framing option at one end of the transmission facility (for example, the near end set for the D4 and the far end set for ESF, or vice- versa). This scenario will cause the LFA at both ends of the transmission link. Another possible cause is an intermittent or[...]

8-10 MAINTENANCE AND ALARMS Blue Alarm The blue alarm shows that maintenance activities are in progress and that the out-of-service condition exists for that DS1 facility. This alarm is recognized as a continuous stream of 1s with no provisions for framing. Depending on the particular NCTE being used, this alarm condition may be treated differently[...]

A. ADMINISTRATION REQUIREMENTS The following screens detail System 75 (R1V2 and R1V3) special-access administration requirements for implementing a Software Defined Network (SDN), MEGACOM ® service, MEGACOM 800 service, and MEGACOM 800 dialed-number identification service (DNIS) connections to a 4ESS configured with 4e9 generic software. All scree[...]

A-2 ADMINISTRATION REQUIREMENTS Line Relates to the distance between the switch and the network channel-terminating Compensation equipment (NCTE), channel-division multiplexer (CDM), channel-expansion multiplexer (CEM), or a digital signal level 1 (DS1) cross connect field (called a DSX-1). Refer to System 75 R1V2 under ADMINISTRATION ISSUES for de[...]

ADMINISTRATION REQUIREMENTS A-3 TRUNK GROUP Page 1 of 5 Group Number: Group Name: Direction: Dial Access? Queue Length: Comm Type: (number assigned) MEGACOM 800 Group Type: tie SMDR Reports? y COR: 1 TAC: 189 1 -way in y 0 voice Outgoing Display? y Busy Threshold: 60 Data Restriction? n Night Service: ____ Internal Alert? n Incoming Destination: __[...]

A-4 ADMINISTRATION REQUIREMENTS TRUNK GROUP Page 1 of 5 Group Number: Group Name: Direction: Dial Access? Queue Length: Comm Type: (number assigned) MEGACOM 800 DNIS Group Type: tie SMDR Reports? y COR: 1 TAC: 189 1-way in y 0 voice Outgoing Display? y Data Restriction? n Busy Threshold: 60 Night Service: ____ Internal Alert? n Incoming Destination[...]

ADMINISTRATION REQUIREMENTS A-5 TRUNK GROUP Page 1 of 5 Group Number: Group Name: Direction: Dial Access? Queue Length: Comm Type: (number assigned) Group Type: tie SMDR Reports? y SDN two-way y 0 voice COR: 1 TAC: 189 Outgoing Display? Busy Threshold: Internal Alert? n y 60 Data Restriction? n Night Service: ____ Incoming Destination: ____ TRUNK P[...]

A-6 ADMINISTRATION REQUIREMENTS Secondary Primary System 75 must obtain synchronization timing from a 4ESS. Typically, the carrier slot location for the DS1 connecting to a 4ESS is used as the primary source. The switch must also be equipped with a TN741. If multiple DS1s are present in a System 75 and are connected to this or other 4ESSs, then it [...]

B. SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS Based on field experience, most problems can be categorized into three general areas: ● Translations-based problems ● Synchronization-related problems ● Physical interfacing connection problems This appendix is organized so that there are additional subject subheadings within each category. The [...]

B-2 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS ● Versatility ● Complexity of installation ● Administration ● Operation ● Type of alarms When a DS1/DMI facility fails to operate (because of a line failure), the first choice in diagnosing the problem is to check the translations. Mistakes in translating procedure 260 are identified by com[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-3 OPTIONS: OPTIONS: ● ● ● ● D4 FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS CHANGED FROM FIGURE B-1 ● ● ● ● D4 FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS DS1 OR DMI INTERFACE TRANSMISSION FACILITY DS1 OR DMI INTERFACE (2-WAY COMMUNICATION) CALL PROCESSING CAN NOW O[...]

B-4 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS LOCATION A DS1 INTERFACE LOCATION B DS1 INTERFACE CHANNEL 1 CHANNEL 2 5/0 6/0 TYPE 36 ....................... TYPE 75 5/0 6/0 CHANNEL 1 CHANNEL 2 TRANSMISSION FACILITY CHANNEL 13 CHANNEL 14 0/0 1/0 TYPE 75 ...................... TYPE 36 0/0 1/0 CHANNEL 13 CHANNEL 14 Figure B-3. Incorrect Assignment o[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-5 the REC or NEC to ensure compatibility between these devices and the associated communications systems. CDMs The CDM is used to drop or insert one or more DS1/DMI channels from the transmission facility. These channels may be used for external data or voice applications, depending on the channel unit[...]

B-6 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS SYSTEM 75 OR SYSTEM 85 OPTIONS: OTHER ENDPOINT OPTIONS: ● ● ● ● D4 OR ESF FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS ● ● ● ● D4 OR ESF FRAMING PER-CHANNEL SIGNALING ROBBED-BIT SIGNALING ZCS TRANSMISSION FACILITY DS1 OR DMI INTERFACE A 24 TRUNKS 24 TRUNKS DS1 OR DMI INTERFA[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-7 SYSTEM 75 OR SYSTEM 85 INTERFACE A OPTIONS: ● D4 OR ESF FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS OTHER ENDPOINT INTERFACE A OPTIONS: ● D4 OR ESF FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS TRANSMISSION FACILITY DS1 OR DMI INTERFACE A 12 AVD TRUNKS [...]

B-8 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS ---- SYSTEM 75/SYSTEM 85 OPTIONS: ● D4 FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS D4-CHANNEL BANK OPTIONS: ● D4 FRAMING ● PER-CHANNEL SIGNALING ● ROBBED-BIT SIGNALING ● ZCS DS1 OR DMI INTERFACE TRANSMISSION FACILITY D4 CHANNEL BANK Figure B-8. System 75/System 85 to [...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-9 Loss of or No Synchronization Without synchronization, a digital interface runs on its own internal clock. If both ends of a DS1/DMI facility (both DS1s) run on their internal clock, timing differences (slips) occur. Digital transmission, either analog data (modem) or digital data, is disrupted at ve[...]

B-l0 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS DS1 OR DMI INTERFACE DS1 OR DMI INTERFACE PRIMARY REFERENCE LOCATION A PRIMARY REFERENCE LOCATION B Figure B-10. Leavenworth Loop on the Primary Reference DS1 OR DMI INTERFACE LOCATION A SECONDARY REFERENCE DS1 OR DMI INTERFACE LOCATION B SECONDARY REFERENCE PRIMARY REFERENCE DS1 OR DMI INTERFACE LO[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-11 common equipment shelf of the D4. External timing may only be optioned from the OIU-2. Loop timing should be selected (digital switch as the master reference) in every instance but one: when a lower stratum clock is available to time the D4-channel bank externally. Figures B-12, N O Synchronization [...]

B-12 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS Digital CO Synchronization Problems Synchronization of DS1 links into a digital CO presents far fewer problems. When a DS1/DMI facility is connected directly into a digital interface circuit pack in the CO, then the only questions are: 1 . 2 . Is the CO reference (stratum clock) a stratum 3 or bette[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-13 for System 85s that are configured with the ANN11C version 8 or later circuit pack. Figure B-15, Synchronization from DACS Node, shows a configuration that obtains synchronization from a DACS. DS1 OR DMI PRIMARY REFERENCE DACS INTERFACE (STRATUM 3) LOCATION A OR BETTER DS1 OR DMI INTERFACE LOCATION [...]

B-14 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS To fix these problems and establish compatibility across several products, new cable groups were developed. These cable groups specify a standard set of pin assignments for four different connector types. The connector and connection types are the: ● ● ● ● 25-pair flat ribbon connector (manu[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-15 TABLE B-2. System 75 Versus System 85 Cable Comparisons CABLE/CONNECTORS (INITIAL OR OLD) (PDS COMPATIBLE) (NOTE 1) SYSTEM 85 (NOTE 2) SYSTEM 85 (NOTE 2) SYSTEM 75 INTRACABINET GR 335-337 GR 367-369 (NOTE 3) N/A 50- TO 15-PIN GR 117 GR 180 OR GR 380 . . . . . . . . . . . . . . . . C6C 50 TO WIRE-LUG[...]

B-16 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS Table B-3, 15-Pin Connector Arrangement (System 75/85 Perspective), shows the 15-pin connector arrangement. TABLE B-3. 15-Pin Connector Arrangement (System 75/85 Perspective) DS1 OR DMI PINOUT FOR 15-PIN CONNECTOR PIN NUMBERS COLOR FUNCTION 1 9 TRANSMIT BR W/BR 3 11 RECEIVE GR W/GR . . . . . . . . .[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-17 TABLE B-4. 8-Position Modular Jack Pin Assignments (System 75 and System 85 Perspective) DS1 OR DMI PINOUT FOR 8-PIN MODULAR JACK (NOTE 1) PIN NUMBERS FUNCTION 1 3 4 2 6 5 RECEIVE LOOPBACK (NOTE 2) TRANSMIT OTHERS NOT USED NOTES: 1. The modular jack may be either the RJ48C or the RJ48X connector. 2.[...]

B-18 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS System 85 DS1/DMI to System 85 DS1/DMI — Colocated Arrangement How this connection is made depends on the vintage or suffix of each DS1. The ANN11B or ANN11C line drivers do not comply with FCC emission standards. Therefore, if the ANN11B or ANN11C are used at one or both ends, this connection may[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-19 Permitted Cabling Combinations Using PDS Using cable GR-380: NOTE: When using PDS wiring, the easiest approach is to connect the port cabinets at each end to a cross-connect field (XCF) using GR-380 cables. With this arrangement, it is not necessary to determine the group number of the intracabinet [...]

B-20 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS System 85 DS1/DMI to System 75 DS1/DMI — Colocated Arrangement Permitted Cabling Combinations Using cable GR-380: ANN11C/D/E ANN11C/D/E ↔ ↔ [335-337] [367-369] ↔ ↔ GR-380 GR-380 ↔ ↔ System 75 System 75 Using old cable groups: Connections using cable group 357 will not work. Using new c[...]

SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS B-21 System 85 DMI to Host Computer Permitted Cabling Combinations Using cable GR-380: ANN11D/E ANN11D/E ↔ ↔ [335-337] [367-369] ↔ ↔ GR-380 GR-380 ↔ ↔ DMI-Host DMI-Host Using old cable groups: Connections using cable group 357 will not work. Using new cable groups: ANN11D/E ↔ [367-369] ↔ [...]

B-22 SAMPLE INSTALLATION AND MAINTENANCE PROBLEMS System 85 DS1/DMI Direct to a NCTE Permitted Cabling Combinations Using Cable GR-380: ANN11C/D/E ANN11C/D/E ↔ ↔ [335-337] [367-369] ↔ ↔ GR-380 GR-380 ↔ ↔ NCTE NCTE Using old cable groups: ANN11C/D/E ↔ [335-337] ↔ 117 ↔ NCT E Using new cable groups: ANN11C/D/E ↔ [367-369] ↔ 180 [...]

C. ADMINISTRATION PROCEDURE SUMMARY This appendix examines administrative procedures in DEFINITY ® Generic 2 that relate to ISDN- PRI. It describes how pertinent administrative fields relate to ISDN-PRI level-3 message contents and general feature operation. This appendix is organized in ascending administrative-procedure number. Differentiations [...]

C-2 ADMINISTRATIVE PROCEDURE SUMMARY Mode 3 Mode 0 Voice Grade Data Unknown Digital Unknown Analog Mode 3/2 Opcode: 4 (assuming no codeset mapping) Information transfer capability: either unrestricted digital information or restricted digital information depending on the translation specified for the bearer capability COS in field 15 of procedure 0[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-3 X.25 Opcode: 4 (assuming no codeset mapping) Information transfer capability: unrestricted digital information Coding standard: CCITT Information transfer rate: coded to a 0 Transfer mode: packet mode Layer and protocol identification: recommendation X.25 link level (LAPD) (layer 2) Layer and protocol identifica[...]

C-4 ADMINISTRATIVE PROCEDURE SUMMARY 1 2 Use an ISDN-PRI trunk exclusively. When routed to a specific pattern, the first available ISDN trunk found in the highest preference is used. Non-ISDN trunk group preferences are skipped in the routing algorithm. If an ISDN-PRI trunk group is not translated in this pattern, the calling party hears intercept [...]

ADMINISTRATIVE PROCEDURE SUMMARY C-5 Mode 2 Mode 3 Mode 0 Opcode: 4 Information transfer capability: restricted digital information Coding standard: CCITT Information transfer rate: 64K-bps Transfer mode: circuit mode Opcode: 4 Information transfer capability: restricted digital information Coding standard: CCITT Information transfer rate: 64K-bps [...]

C-6 ADMINSTRATIVE PROCEDURE SUMMARY For an ISDN trunk group, a dynamic trunk type (120) can be assigned to the group. This trunk type allows the group to process calls with a different trunk type on a call-by-call (CBC) basis. For example, one incoming call over the group may expect station number digits (such as a MEGACOM call), while the next cal[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-7 PROCEDURE 100 WORD 3 (System 85 R2V4 & Generic 2) Field 2 Field 3 Field 8 Used to assign a trunk group as ISDN-PRI that has ISDN-PRI signaling (type 20). This causes ISDN-PRI message-oriented signaling (MOS) to occur for the trunk group. Not applicable for ISDN-PRI trunk groups. ISDN-PRI specifications expla[...]

C-8 ADMINISTRATIVE PROCEDURE SUMMARY Field 15 BC (System 85 R2V4 Only). For ISDN-PRI this field comes into play on interworked tandem calls through the switch where the calling trunk is non-ISDN-PRI and the called trunk is ISDN-PRI. Here, the BC of the non-ISDN trunk is used to define a BC that is used in the outgoing setup message over the ISDN-PR[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-9 PROCEDURE 108 WORD 1 (System 85 R2V4 & Generic 2) This procedure is used to assign the terminating test-line telephone digits to an ISDN-PRI trunk group. These are the address digits used to build the called party number IE in the setup message when making a demand test call via procedure 648 test 3. If digi[...]

C-10 ADMINISTRATIVE PROCEDURE SUMMARY Field 5 of this word specifies an interface type of network or user. For an ISDN-PRI point-to-point link to function, one end must be translated as network and the other end as user. This field also determines how glare is handled on this board. The following rules apply to glare handling: P E U N X 1 2 3 4 Req[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-11 (timer value) = (N200 + 1) * T200 The default value of these four timers is 4 seconds [(3 + 1) * 1]. T321 is defined as T203 + 10 seconds. As T203 defaults to 30 seconds, T321 is defined as a 40 second timer. Field 13 of this word applies only to Generic 2. If the physical location is part of an NFAS arrangemen[...]

C-12 ADMINISTRATIVE PROCEDURE SUMMARY TABLE C-2. System 85 R2V4 to Generic 2 IE Opcode Translations IE Opcode Value Information Element (IE) Name R2V4 G2 Link layer parameters 1 64 Packet layer parameters 2 62 Logical link identification 4 26 The next two user-to-user IEs kept the same opcode values when moved from codeset 7 to codeset 6: TABLE C-3[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-13 PROCEDURE 309 WORD 5 (System 85 R2V4 & Generic 2) This word deals with the sending of a particular NSF IE in the setup message and with rules of route selection. Field 4, ISDN Trunk Type This field can only contain a value when the trunk group associated with the plan, pattern, or preference has a type of I[...]

C-14 ADMINISTRATIVE PROCEDURE SUMMARY NSF IE (System 85 R2V4) For System 85 R2V4, the following values can be entered into field 5: 33 through 288 (OUTWATS Band NSFs) 352 (SDN NSF) 354 (MEGACOM NSF) These values specify the plan, pattern, or preference is requesting service for OUTWATS bands 0-255 respectively. For example, 33 specifies OUTWATS ban[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-15 356 (WATS NSF) 357 (ACCUNET via encode 357) Opcode: 2 The following three items are sent only if field 12 of procedure 309, word 1, is nonzero. Network identification plan: carrier identification code Type of network identification: national network identification Network identification: (three octets show the [...]

C-16 ADMINISTRATIVE PROCEDURE SUMMARY Rules for requesting ACCUNET services from different generics of 4ESS are the same as those for System 85 R2V4. That is, when dealing with 4E13 or later, set up a definition of a binary service with a value of 6. This definition is used in field 6 of procedure 309, word 5, that sends an NSF (this is the paralle[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-17 Field 6 (Generic 2) Field 16 of procedure 014, word 1, defines the BC for the calling party’s COS. Fields 4 through 13 of procedure 014, word 1, define the bearer capability COS of the preference. Field 6 of procedure 309, word 5, defines how to handle calling parties. If a calling party with a particular BC [...]

C-18 ADMINISTRATIVE PROCEDURE SUMMARY In addition, a thousands digit can be assigned in field 4. This digit must be assigned in 3-digit switches for the calling party number and connected number to make sense. If assigned in a 4 or 5- digit switch, it is used for the thousands digit in the address digit stream regardless of what the thousands digit[...]

ADMINISTRATIVE PROCEDURE SUMMARY C-19 The following are ISDN-related tasks and their task numbers for System 85 R2V4: Task 35 ISDN queue server task Task 47 ISDN level-3 timing task Task 55 ISDN JUMBO I/O task Task 61 ISDN incoming message-verification task The following are ISDN-related tasks and their task numbers for Generic 2: Task 35 ISDN queu[...]

C-20 ADMINISTRATIVE PROCEDURE SUMMARY[...]

D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES This appendix contains three tables that define trunk type to signaling type compatibility for System 85 R2V1, R2V2, R2V3, R2V4, and Generic 2. Table D-1, Trunk/Signaling Cross-references, provides, on a trunk type basis, the default signaling type, the feature and direction compatibility, and t[...]

D-2 TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES Direction Default Signaling EQ U A1 - A4 Description Defines if the trunk type is capable of both: ● ● ● Incoming and outgoing calls — 2-way Incoming calls only — 1-way in Outgoing calls only — 1-way out The default SIG_TYPE value for the trunk type COMPOOL EQU for default signaling[...]

TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES D-3 Trunk Type EQU Feature Direction Default Signaling EQU A1 A2 A3 A4 co_2wp (20) CO 2-way ground_start_w_pt (2) Description fx1wi 21 FX 1-way in ground_start 1 28 29 19 20 2 way with party test 1 way incoming attendant completing fxlwo 22 FX 1-way out ground_start 1 28 29 19 20 fxlwop (23) FX 1-w[...]

D-4 TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES Trunk Type EQU Feature Direction Default Signaling EQU A1 A2 A3 A4 Description tt-sender 55 NA NA no_signal_required 0 touch tone sender caserv 56 NA NA no_signal_required 0 centralized attendant service interface r1s_link 57 CAS 1-way out em_rls_link_trunk_out 13 release link trunk for cas ani[...]

TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES D-5 A1 A 2 A3 A4 EQU Feature Direction Default Signaling 102 NA 2-way s_channel_signaling Description pooled data module trunk for modem pool host access trunk, 2-way, pim Trunk Type EQU 18 18 18 dtlpdm 103 NA 2-way s_channel_signaling 104 NA 2-way s_channel_signaling 105 NA 2-way s_channel_signali[...]

D-6 TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES TABLE D-2. R2V4 Alternate Signaling Type Translations Trunk EQU R2V4 G2 Equiv. Type Sig. Type Sig. Type colwi 16 4 28 16 21 29 colwo 17 4 28 17 21 29 colwop 18 4 28 18 21 29 co_2w 19 4 28 19 21 29 co_2wp 20 4 28 20 21 29 fx1wi 21 4 28 21 21 29 fx1wo 22 4 28 22 21 29 fx1wop 23 4 28 23 21 29 fx_2[...]

TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES D-7 Table D-3, Signaling Type Compatibility, provides the compatibility of standard signaling types. The first column is the frame of reference for the direction compatibility. Compatibility is either one way out, one way in, or bidirectional from this entry. TABLE D-3. Signaling Type Compatibility[...]

D-8 TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES Table D-4, Signaling Type Definitions, provides definitions for the signaling types used in the other three tables in this appendix. TABLE D-4. Signaling Type Definitions Mnemonic EOU Definition Trad. Circuits Hybrid Circuits no_signal_req 00 no signaling required NA NA ground_start 01 ground s[...]

ABBREVIATIONS A AAR A/CO ADFTC AFRL AIOD ALU ANI ARS A/TO A/TT AUTOVON AVD AWG B8Z S BC BCC BCCOS bps CBC CCITT CCR CCSA CDM CEM COR COS CRC CSU ampere Automatic Alternate Routing Analog CO trunk analog/digital-facility test circuit alternate facilities restriction level automatic identified outward dialing arithmetic logic unit automatic number id[...]

AB-2 ABBREVIATIONS DACS dB DCE D/CO DCP DID DIF DIP DMI DMI-BOS DMI-MOS DNIS DPO DS1 DSU DSX-1 DT E D/TO D/T T E& M EDSL EI A EPSCS E S ES F FA S FR L F X FX O FX S GR S HDLC H z digital-access and cross-connect system decibel data circuit-terminating equipment digital CO trunk Digital Communications Protocol Direct Inward Dialing digital inter[...]

ABBREVIATIONS AB-3 I C I E INADS ISDN ISDN-BRI ISDN-PRI IX C LAPD LATA LDN LEC LFA LOS LSB MAAP MFAT MO MPDM MTBF MTCP MTTR NCTE NEC NFAS NPA NSF ONS OPS OPX PAD PAM PCM PDM integrated circuit information element Initialization and Administration System Integrated Services Digital Network Integrated Services Digital Network basic rate interface Int[...]

AB-4 ABBREVIATIONS PDS PR I RBS REC RFA RGI RMATS SAO SCS SDN S/DTT SID SLC SLIM SMT SS 7 TCM TEG TMS TSI TTL TTTN TVC TVS UDP UU I VMAAP VN L V VBR W WATS ZC S premises distribution system primary rate interface robbed-bit signaling Regional Engineering Center remote frame alarm Remote Group Interface Remote Maintenance, Administration, and Traffi[...]

GLOSSARY 1s density 24th-channel signaling 800 service access ACCUNET ® ACCUNE T ® digital service ACCUNET ® packet service ACCUNET ® reserved 1.5 service ACCUNE T ® T 1 service See ones density. Digital signal level 1 (DS1) signaling in which the signaling for each of the first 23 channels is multiplexed onto the 24th channel, thereby providi[...]

GL-2 GLOSSARY analog analog/digital- facility test circuit (ADFTC) arithmetic logic unit (ALU) asynchronous data transmission AT&T ISDN basic rate interface (BRI) AT&T ISDN primary rate interface (ISDN-PRI) AT&T standardized facility element Automatic Alternate Routing (AAR) automatic identified outward dialing (AIOD) automatic number i[...]

GLOSSARY GL-3 AWG bandwidth baud bit rate bits per second (bps) B8ZS B-channel B-channel cut- through BCCOS BCCOS — unknown analog BCCOS — unknown digital bearer capability bearer capability class (BCC) bearer capability class of service (BCCOS) bearer- capability routing See American Wire Gauge. The difference, expressed in hertz, between the [...]

GL-4 GLOSSARY binary service One of two network specific facility (NSF) service types that are administered in format conjunction with the Automatic Alternate Routing/Automatic Route Selection (AAR/ARS) routing patterns. The binary service format conveys in a single byte all the necessary information for the service or facility. See also parameteri[...]

GLOSSARY GL-5 channel-division multiplexer (CDM) channel- expansion multiplexer (CEM) channel negotiation channel service unit (CSU) circuit-switched transport mode class of restriction (COR) class of service (COS) A device that connects directly to a System 75 or a System 85 digital signal level 1 (DS1) port to provide point-to-point or multipoint[...]

GL-6 GLOSSARY clear-channel signaling clear channel transmission codepoint codeset combination tie trunk common- channel interoffice signaling common- channel signaling Common- Control Switching Arrangement (CCSA) CRC cross coupling CSU cyclic redundancy check (CRC) See 24th-channel signaling and common-channel signaling. A channel that does not us[...]

GLOSSARY GL-7 D4 framing format D-channel DACS data module data set data service unit (DSU) data terminal equipment (DTE) dB DCP decibel (dB) dialed-number identification service (DNIS) dial pulse dial-pulse addressing DID digital-access and cross- connect system (DACS) A format containing 12 frames. See also extended frame and frame. The 16K-bps o[...]

GL-8 GLOSSARY Digital Communication Protocol (DCP) digital digital data digital multiplexed interface (DMI) digital multiplexed interface with bit-oriented signaling (DMI-BOS) digital multiplexed interface with message- oriented signaling (DMI-MOS) digital signal level 1 (DS1) Direct Inward Dialing (DID) DNIS DS1 DS1 robbed-bit signaling DSX-1 DTE [...]

GLOSSARY GL-9 EIA (Electronics Industries Association) EDSL electronic tandem network (ETN) end-to-end ISDN connectivity Enhanced Private Switched Communications Service (EPSCS) EPSCS errored second (ES) ES ESF ETN exclusive- channel request extended digital subscriber line (EDSL) extended superframe (ESF) framing format external clock reference fa[...]

GL-10 GLOSSARY FRL final trunk group facilities restriction level (FRL) first-choice trunk group fixed-loss plan Flexible Assignment of BX.25 (DCIU/SCI) Signaling Ports foreign exchange (FX) frame functional signaling FX Generalized Route Selection (GRS) glare GRS HDLC high-level data link control (HDLC) A last-choice trunk group that receives over[...]

GLOSSARY GL-11 high-volume tandem hyperactivity INADS inband signaling information element (IE) information transfer capability information transfer rate Initialization and Administration System (INADS) Integrated Services Digital Network (ISDN) Integrated Services Digital Network basic rate interface (ISDN-BRI) A tandem communications system that [...]

GL-12 GLOSSARY Integrated Services Digital Network primary rate interface (ISDN-PRI) interexchange carrier (IXC) interface internal clock reference interworking ISDN ISDN dynamic trunk ISDN network identifier ISDN network- service value The interface between multiple communications systems that in North America includes 24 64K-bps channels, corresp[...]

GLOSSARY GL-13 ISDN SID-ANI LATA LFA link-access procedure on the D-channel (LAPD) local exchange company (LEC) Look-Ahead Interflow LOS loss of frame alignment (LFA) alarm loss of signal (LOS) alarm maintenance and administration panel (MAAP) maintenance object (MO) MEGACOM ® A capability that can provide to a called party either the station iden[...]

GL-14 GLOSSARY MEGACOM ® 800 misframe MO mode 3 modem modem pooling modular processor data module (MPDM) MPDM multiplexer NCTE network channel- terminating equipment (NCTE) network feature network identifier network service network side network-specific facilities (NSF) AT&T’s tariffed digital 800-service offering for inward calling. A condi[...]

GLOSSARY GL-15 network synchronization plan nonfacility associated signaling (NFAS) off-premises extension (OPX) off-premises station (OPS) ones density OPS OPX out-of-band signaling packet packet assembler/ disassembler (PAD) An engineering diagram that identifies each customer-premises switching node and specifies how each switching node is to ob[...]

GL-16 GLOSSARY packet-switched transport mode packet switching packetized data PAD parameterized- service format partitioning PAM PC/PBX Connection PCM PDM PDS preferred call reference premises distribution system (PDS) PRI The condition in which a communications system or network provides packet switching of the user’s data. See also circuit-swi[...]

GLOSSARY GL-17 primary rate interface (PRI) private network processor data module (PDM) protocol discriminator public network pull-in range pulse-amplitude modulation (PAM) pulse-code modulation (PCM) Q.920 and Q.921 Q.930 and Q.931 Q recommendations raw data remote frame alarm (RFA) A standard Integrated Services Digital Network (ISDN) frame forma[...]

GL-18 GLOSSARY Remote Group remote module restricted channel restricted digital data RFA RG robbed-bit signaling SDN secondary synchronization reference senderized operation severely errored second signaling system number 7 slip A feature that allows a group of port circuits — equivalent to one or more port circuit packs but fewer than one module[...]

GLOSSARY GL-19 Software Defined Network (SDN) special access SS7 station identification (SID) number stimulus signaling switched access synchronization synchronous data transmission synchronous transmission T1 T1 digital carrier tandem tie- trunk network (TTTN) TCM tenant service An AT&T private networking service created by specialized softwar[...]

GL-20 GLOSSARY terminal balance Terminating- Extension Group (TEG) time- multiplexed switch (TMS) time-slot interchanger (TSI) TMS toll office transport mode traveling class mark (TCM) trunk group trunk type TMS TSI TTTN UDP Uniform Dial Plan (UDP) The measured echo-return and singing-return losses for a port when connected to a specific 2-wire cen[...]

GLOSSARY GL-21 unrestricted channel unrestricted digital data user-to-user information (UUI) exchange user-to-user information transfer UU I via-net loss (VNL) visual maintenance and administration panel (VMAAP) VN L voice-grade data WATS (Wide Area X.25 ZCS A B-channel that uses bipolar with 8-zero substitution (B8ZS) line coding and that does not[...]

GL-22 GLOSSARY zero code A binary-coding scheme that ensures that a data stream contains at least a suppression minimum number of information bits to ensure receiver synchronization. While (ZCS) acceptable for voice transmission, ZCS may not be acceptable for data transmission. See also ones density.[...]

INDEX 1 1s density 1-17, 1-20 2 24th-channel signaling 1-14, 1-15, 2-3 4 4-wire E&M extended range channel units 2-5 5 50-pin (25-pair) connector configurations B-14 551V channel service unit 6-1 551V ST channel service unit 6-1 5ESS to another system 2-7 A AAR assignments 7-46 access ACCUNET 6-3, C-16 code dial 7-26, 7-84 trunk 7-24, 7-82 conn[...]

IN-2 INDEX Automatic Alternate Routing (AAR) BC 1-24 called party IE 7-38 CBC 7-25 feature groups 7-4 feature parameters 7-104 ISDN dynamic trunk group C-6 network characteristics 7-47 network identifier 7-46 routing tables 7-102 automatic identified outward dialing (AIOD) 7-31, 7-89, 7-92 automatic number identification (ANI) 1-28 Automatic Route [...]

INDEX IN-3 cancelers echo 3-6 CAS 1-29 cascode node connections 5-24 CBC Service Selection 1-28 CCITT BOS specification 7-63 MOS specification 7-15 SS7 7-30, 7-88 standards 1-2 CCR 2-8 CCSA 1-31 CDM applications 2-9 cabling configurations 3-7 framing format 7-8 master clock 5-20 terminal transmission equipment 3-1 CEM cabling configurations 3-7 fra[...]

IN-4 INDEX COR 7-112, 7-125, A-2 COS C-1 BC and ISDN routing 7-80 interworking 1-27 translation Generic 1 7-125 Generic 2 7-51 CRC 1-12, 1-14 CRV 1-26 CSU xix, 1-20, 3-2 customer controllable reconfiguration 2-8 service unit 1-20, 3-2 cut-through dialing trunk groups 1-25 cut-through operation 1-31 cyclic redundancy check (CRC) 1-12 D D4 channel ba[...]

INDEX IN-5 digital— Contd cross-connects 3-1 data 1-9 data transmission 7-9, 7-109, 7-118 facilities, synchronization of 5-1 fixed loss 4-2 loss plan definition 4-1 encodes 4-3 external attenuator 2-5 fixed 4-1 implementing 4-1 low 4-1 port-to-port losses 4-5 multiplexed interface (DMI) administration B-1 alternative to DS1/D4 1-1 digital loss pl[...]

IN-6 INDEX DS1— Contd DMI— Contd BOS Generic 1 6-4 line-only mode 5-29 line+trunk mode 5-30 ISDN-PRI port losses 4-6 private-network connections 2-3 public-network connections 2-6 terminal-equipment connections 2-9 DSX-1 cross connect 3-1 echo 3-6 encoding technique 1-8 endpoints 2-3 FAS 1-9 for hybrid module 5-9 for traditional module 5-9 fram[...]

INDEX IN-7 foreign exchange subscriber (FXS) 4-7 formats facility B-2 four-wire E&M extended range channel units See 4-wire E&M extended range channel units 2-5 frame 1-10 framing D4 1-10, 2-5, 2-7 ESF 2-7 extended superframe (ESF) 2-3 formats 1-10 signaling and line coding 2-6, 2-13 free run ability 5-4 FRL 7-146, C-3 FT3 lightwave 3-2 fun[...]

IN-8 INDEX interexchange carrier (IXC)— Contd System 85 ARS assignments 7-42 internal clock reference B-9, B-11, B-12 description 5-1 digital network nodes 5-6 requirements 5-4 slips 5-3 definition translations C-10 reference selection rules 5-19 referenced nodes 5-18 interworking 1-27, C-6 Intra-LATA calls, screening 2-7, 2-14 ISDN administratio[...]

INDEX IN-9 loss— Contd combination tie trunk 4-6 digital 4-1 DS1/DMI/ISDN-PRI 4-6 extended range channel units 4-6 insertion 4-1 ISL digital, low 4-1 of frame alignment (LFA) alarm 8-6, 8-8, 8-9 of signal (LOS) alarm 8-9 OPS ports 4-7 pad group 4-2, 4-3 plan, digital 4-2 plan implementation and provisioning Generic 1 4-3 Generic 2 4-2 port-to-por[...]

IN-10 INDEX muitiplexer— Contd CEM— Contd line compensation A-2 digital xx, 3-2 error detection capabilities 8-5 IBM IDNX 6-2, 6-3 IDNX 2-4 incompatibility with 7-109, 7-118 M13 7-10, 7-58 MIC 7-10, 7-58 MX2 7-10, 7-58 MX3 7-10, 7-58 synchronization 5-1 T1 6-1 multipoint 2-10 N NCTE 551V ST xix bipolar violations 1-20 metallic facilities 3-2 po[...]

INDEX IN-11 O octet, all-0s 1-18 office interface unit (OIU-2) 2-5 offline module 5-8 off-premises cabling 3-5 station (OPS) applications 7-1 channel assignments 7-62 channel selection 7-13 DS1 termination 7-14 DS1/DMI channel administration 6-12 equipment locations 7-14 facility selection 7-13 line applications 7-56 line assignments 7-62 line opti[...]

IN-12 INDEX public network connections— Contd DACS to another system 2-8 DS1/DMI 2-6 ISDN-PRI 2-13 System 85 or Generic 2 ISDN-PRI to a 5ESS 2-15 System 85 R2V4, Generic 1, and Generic 2 to a 4ESS 2-13 System 85 R2V4, Generic 1, or Generic 2 to a DACS 2-15 pulse-code modulation (PCM) 1-8, 5-1 Q Q recommendations 1-3 Q.921 1-3 Q.931 1-3 R R2V4 alt[...]

INDEX IN-13 service— Contd /facility options— Contd System 85 Release 2 7-7 type, DMI-MOS 2-3 shared channel 2-10 SID-ANI 1-28, 7-128 signal, preequalized 3-9 signaling 2-6 24th-channel 1-14, 2-3 AT&T proprietary 1-14 bundling 2-11 channel 1-4 cross-references D-2 DMI-BOS 1-14, 2-3 DMI-MOS 1-14, 2-3 dual-tone multifrequency (DTMF) 2-6 E&[...]

IN-14 INDEX System 75 administration options and requirements 7-107 and Generic 1 synchronization architecture 5-11 and Generic 1 synchronization software operation 5-12 System 85 administration options and requirements 7-3 digit collection C-7 synchronization architecture 5-7 synchronization software operation 5-9 traditional module equalizer sett[...]

INDEX IN-15 toll office— Contd public-network connections 2-6 restrictions A-2 touch-tone capability 2-6, 2-14 transmission availability 5-22 conditions, digital data 1-9 error 1-11 synchronous 5-1 transparent port 6-10, 6-12 transport mode 1-23, 7-77, 7-78 traveling class mark (TCM) C-7 BCC 1-23 display information 7-132 ISDN-PRI routing option [...]

IN-16 INDEX voice-grade data— Contd definition 1-8 Generic 1 AVD trunk limitations 7-118 System 75 AVD trunk limitations 7-109 System 85 AVD trunk limitations 7-9 W Wide Area Telecommunications Service (WATS) 2-8, 7-13, D-1 wiring, premises distribution system (PDS) 2-5 X X.25 1-10 Y yellow alarm 8-5, 8-9 Z zero code suppression (ZCS) and B8ZS di[...]