Paradyne 3600 manual

COMSPHERE 3600 SERIES DA T A SER VICE UNITS MODELS 3610 AND 361 1 TIME DIVISION MUL TIPLEXER, MUL TICHANNEL MUL TIPOINT , AND DIGIT AL BRIDGE OPTIONS APPLICA TIONS GUIDE Document No. 3610-A2-GB41-60 March 1999[...]

COMSPHERE 3600 Series Data Service Units A March 1999 3610-A2-GB41-60 COMSPHERE 3600 Series Data Service Units Models 3610 and 361 1 T ime Division Multiplexer , Multichannel Multipoint, and Digital Bridge Options Applications Guide 3610-A2-GB41-60 7th Edition (March 1999) Changes and enhancements to the product and to the information herein will b[...]

Safety Instructions B 3610-A2-GB41-60 March 1999 ! Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a 3-wire grounding type plug — a plug which has a grounding pin. This is a safety feature. Equipment grounding is vita[...]

COMSPHERE 3600 Series Data Service Units C March 1999 3610-A2-GB41-60 Notices                    ?[...]

i 3610-A2-GB41-60 March 1999 T able of Contents Preface About this Guide vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How to Use this Guide vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents viii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3600 Series Data Service Units ii March 1999 3610-A2-GB41-60 3. Model 361 1 Installation Overview 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware Straps 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Software Configuration 3-4 . . . . .[...]

T able of Contents iii 3610-A2-GB41-60 March 1999 List of Figures Figure Page 1-1 Model 3610 DSU with TDM or MCMP 1-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Model 361 1 DSU with TDM or MCMP 1-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Model 3610 TDM/Flex or MCMP/Flex Switch Locations 2[...]

COMSPHERE 3600 Series Data Service Units iv March 1999 3610-A2-GB41-60 Figure Page 4-25 Case 4 – Backing Up (Up to) Three Channels via the FEP Port-Sharing Feature 4-32 . . 4-26 Digital Bridge/DCE Interface 4-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27 Aggregate Switched Backup for MCMP Circuit Conf[...]

T able of Contents v 3610-A2-GB41-60 March 1999 Figure Page D-7 Extended Bridge Configuration: Automatic Partial Backup – Dial Backup Not Active D-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-8 Extended Bridge Configuration: Automatic Partial Backup Active – Dial Backup Active for All Drops D-16[...]

COMSPHERE 3600 Series Data Service Units vi March 1999 3610-A2-GB41-60 List of T ables T able Page 4-1 LADS Connection Distances 4-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 TDM and MCMP Status Indicators (Model 361 1 Only) 5-5 . . . . . . . . . . . . . . . . . . . . . . 5-2 DSU with TDM or MCMP and[...]

vii 3610-A2-GB41-60 March 1999 Preface About this Guide This applications guide is intended as a supplement to the operator ’ s guide; it only contains installation and operation information that is specific to the T ime Division Multiplexer (TDM), Multichannel Multipoint (MCMP), and digital bridge options for the COMSPHERE r 3600 Series Data Ser[...]

COMSPHERE 3600 Series Data Service Units viii March 1999 3610-A2-GB41-60 Related Documents Basic DSU product documentation includes the following: 3610-A2-GB46 COMSPHERE 3600 Series Data Service Units, Models 3610 and 361 1, User ’ s Guide 3610-A2-GB48 COMSPHERE 3600 Series Data Service Units, Models 3610 and 361 1, T ime Division Multiplexer , M[...]

1-1 3610-A2-GB41-60 March 1999 Overview Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard Features 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3600 Series Data Service Units 1-2 March 1999 3610-A2-GB41-60 LPDA-2 interoperability is provided by the systems network architecture (SNA) Diagnostic Interface option that is installed on the DSU circuit card. It supports DSU management from IBM’ s NetV iew t host-based network management system (NMS), as well as management from a Para[...]

Overview 1-3 3610-A2-GB41-60 March 1999 • Port speeds. Speeds of the individual TDM ports (1 through 6) can be set to 1.2, 2, 2.4, 4, 4.4, 4.8, 7.2, 8.4, 9.2, 9.6, 12, 14.4, 16.8, 18, 18.8, 19.2, 28.8, 32, 38.4, 48, 56, or 64 kbps full-duplex. The sum of the port speeds cannot exceed the line speed. • Asynchr onous operation. Although the DSU p[...]

COMSPHERE 3600 Series Data Service Units 1-4 March 1999 3610-A2-GB41-60 DSU with MCMP Capability The MCMP capability is an enhancement to TDM and allows up to six independent application programs to share one standard 56 kbps multipoint facility . Only an MCMP can be configured to provide MCMP capability and provides the following features: • Cha[...]

Overview 1-5 3610-A2-GB41-60 March 1999 DSU with Digital Bridge Capability The digital bridge capability is dedicated to a single DSU, and the data terminal equipment (DTE) connected to that DSU is usually the controlling DTE of a multipoint network. Both TDM and MCMP can be configured to provide the digital bridge capability . The digital bridge c[...]

COMSPHERE 3600 Series Data Service Units 1-6 March 1999 3610-A2-GB41-60 Models The 3600 Series DSUs are available in two models: • Model 3610 is a standalone desktop unit. • Model 361 1 is a circuit card for installation in a COMSPHERE 3000 Series Carrier . NOTE Except where specifically noted, all features and capabilities of the 3600 Series D[...]

Overview 1-7 3610-A2-GB41-60 March 1999 496-13091-04 EIA232D/V .24 INTERF ACE (PORT 1) V .35 INTERF ACE (PORT 1) NETWORK DIAGNOSTIC INTERF ACE DBM INTERF ACE DDS INTERF ACE LOW VOL T AGE AC POWER IN COMSPHERE 3610 PO RT 5 PO RT 6 PO RT 2 PO RT 3 PO RT 4 ADDITIONAL EIA-232 INTERF ACES PORT NUMBERS 2 – 6 ST A TUS INDICA TORS T ABLE-TOP AC TRANSFORM[...]

COMSPHERE 3600 Series Data Service Units 1-8 March 1999 3610-A2-GB41-60 Figure 1-2. Model 361 1 DSU with TDM or MCMP[...]

Overview 1-9 3610-A2-GB41-60 March 1999 DBM T ypes Three dial backup modules (DBMs) are available. A DBM is optional and provides an alternate data path in case the digital connection fails. Each of the three DBM types listed below occupy one slot in the COMSPHERE 3000 Series Carrier . DBM-V A DBM-V is used for point-to-point dial backup and provid[...]

COMSPHERE 3600 Series Data Service Units 1-10 March 1999 3610-A2-GB41-60[...]

2-1 3610-A2-GB41-60 March 1999 Model 3610 Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware Straps 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3600 Series Data Service Units 2-2 March 1999 3610-A2-GB41-60 This chapter contains only installation information that is specific to a TDM or MCMP , including the Flex and DSD options. NOTE Unless specifically noted, TDM refers to a TDM, TDM/Flex, or TDM/DSD, and MCMP refers to an MCMP , MCMP/Flex, or MCMP/DSD. TDM or MCMP installation c[...]

Model 3610 Installation 2-3 3610-A2-GB41-60 March 1999 Figure 2-1. Model 3610 TDM/Flex or MCMP/Flex Switch Locations Figure 2-2. Model 3610 TDM/DSD or MCMP/DSD Circuit Card Switch Locations[...]

COMSPHERE 3600 Series Data Service Units 2-4 March 1999 3610-A2-GB41-60 Changing Hardware Settings If you have a new TDM/Flex or MCMP/Flex or if you ordered a Flex field installation upgrade for a DSU having firmware version 6.3 x or gr eater , you do not change hardware straps; you set each port to operate independently of the others via the DCP ,[...]

Model 3610 Installation 2-5 3610-A2-GB41-60 March 1999 3. Disconnect the keypad flat cable from the DSU circuit card by squeezing the latches on each side of the cable and gently pulling up (refer to Figure 2-4). 4. Disconnect the LCD flat cable by gently working the cable, not the connector , free of its connector . Be car eful not to bend any of [...]

COMSPHERE 3600 Series Data Service Units 2-6 March 1999 3610-A2-GB41-60 Changing the Flex Interface Switch The TDM or MCMP field installation upgrade is shipped from the factory with the switch position set to EIA-232. The following procedure tells you how to change this setting to V .35 or back to EIA-232. " Procedure 1. Determine whether the[...]

Model 3610 Installation 2-7 3610-A2-GB41-60 March 1999 Changing the DSD Option Card The TDM/DSD or MCMP/DSD is shipped from the factory with the option card set to EIA-232. The following procedure tells you how to change this setting to V .35 or back to EIA-232. NOTE If the unit has already been installed, make sure that the unit is disconnected fr[...]

COMSPHERE 3600 Series Data Service Units 2-8 March 1999 3610-A2-GB41-60 Electrical Connection CAUTION The power cord with ac transformer contains a 3-wire grounding-type plug which has a grounding pin. This is a safety feature. Grounding of the unit is vital to ensure safe operation. Do not defeat the purpose of the grounding plug by modifying it o[...]

Model 3610 Installation 2-9 3610-A2-GB41-60 March 1999 T ABLE-TOP AC TRANSFORMER W ALL-MOUNT AC TRANSFORMER SNAP T ABS (4) FRONT BEZEL FRONT BEZEL COMSPHERE 3610 COMSPHERE 3610 V .35 INTERF ACE (PORT 1) EIA-232-D/V .24 INTERF ACE (PORT 1) PO RT 2 PO RT 3 PO RT 4 LOW VOL T AGE AC POWER IN DBM INTERF ACE DDS INTERF ACE NETWORK DIAGNOSTIC INTERF ACE P[...]

COMSPHERE 3600 Series Data Service Units 2-10 March 1999 3610-A2-GB41-60 If the DSU, DBM, TDM or MCMP (MUX) fails the power -up test: " Procedure 1. Reinstall the factory configuration options; use the FacT configuration for a tributary or FacC for a control. 2. Confirm the installed hardware options (DBM, TDM, or MCMP). 3. Re-execute the Devi[...]

Model 3610 Installation 2-1 1 3610-A2-GB41-60 March 1999 T o change configuration options of the Model 3610 DSU from the DCP or the Model 3610 from an async terminal, select the Local branch, then the Configuration (Confg) branch. (If not displayed, press the key until Confg is displayed, then press the function key below the selection.) Select Opt[...]

COMSPHERE 3600 Series Data Service Units 2-12 March 1999 3610-A2-GB41-60 V erification T esting Perform verification testing after any installation. After installing and configuring a network, including control and tributary DSUs, the DDS network and, if appropriate, DBMs and their dial connections, perform the following series of tests from the co[...]

Model 3610 Installation 2-13 3610-A2-GB41-60 March 1999 Adding a TDM/Flex or MCMP/Flex to an Installed Model 3610 DSU This section describes the procedure for adding a TDM/Flex or MCMP/Flex upgrade for the Model 3610 DSU. The time division multiplexer (TDM/Flex) or multichannel multipoint (MCMP/Flex) upgrade for the Model 3610 (standalone) DSU incl[...]

COMSPHERE 3600 Series Data Service Units 2-14 March 1999 3610-A2-GB41-60 Getting Started As you follow these steps, refer to Figure 2-8. " Procedure 1. Unplug the table-top ac transformer from the ac outlet, then disconnect the power cord from the DSU’ s rear panel (labeled POWER). 2. Disconnect the DDS interface cable (labeled LINE) from th[...]

Model 3610 Installation 2-15 3610-A2-GB41-60 March 1999 Removing the DSU from Its Base Refer to Figure 2-4 as you follow these steps. If replacing a TDM or MCMP , refer to this figure as you remove the current TDM or MCMP . " Procedure 1. Disconnect the keypad flat cable from the DSU by squeezing the small black latches on each side of the cab[...]

COMSPHERE 3600 Series Data Service Units 2-16 March 1999 3610-A2-GB41-60 Reassembling the Unit Refer to Figure 2-4 as you close the unit and Figure 2-8 to reconnect cables. " Procedure 1. Align the cover over the expanded base and rear panel. Make sure the four snap tabs are over their corresponding slots (two in front and two in back). 2. App[...]

3-1 3610-A2-GB41-60 March 1999 Model 361 1 Installation Overview 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Non-Modular DSU with a TDM or MCMP 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modula[...]

COMSPHERE 3600 Series Data Service Units 3-2 March 1999 3610-A2-GB41-60 Non-Modular DSU with a TDM or MCMP The non-modular Model 361 1 DSU-TDM or DSU-MCMP has connectors mounted directly onto the circuit cards. W ith this type of unit, the DTE cables must be disconnected before the unit can be removed from the carrier . A 60-pin high-density connec[...]

Model 361 1 Installation 3-3 3610-A2-GB41-60 March 1999 Hardware Straps HANDLING PRECAUTIONS FOR ST A TIC-SENSITIVE DEVICES This pr oduct is designed to pr otect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedur es, however , take proper static control precautions to[...]

COMSPHERE 3600 Series Data Service Units 3-4 March 1999 3610-A2-GB41-60 Figure 3-2. Modular TDM/MCMP Circuit Card Switch Locations Software Configuration A default software configuration is loaded in the DSU at the factory . If the TDM option is installed, the Model 361 1 DSU is configured as a control with TDM mode enabled and Port 1 set to operat[...]

Model 361 1 Installation 3-5 3610-A2-GB41-60 March 1999 For the 6700 Series NMS, configuration options are menu-driven. Select Config → Network → Devices → the appropriate submenu selection. T ributary 3610 DSUs with TDM or MCMP can be configured from an NMS provided the Position configuration option (Diagnostic General) is set to T rib from [...]

COMSPHERE 3600 Series Data Service Units 3-6 March 1999 3610-A2-GB41-60 For a DSU equipped with MCMP: " Procedure 1. Fr om the contr ol DSU , go to the Control ( Ctrl ) branch, select LEDs , and then select Aggregate ( Aggr ) to monitor the aggregate 56 kbps digital signal. 2. Go to the Configuration ( Confg ) branch and select Poll List ( PLi[...]

Model 361 1 Installation 3-7 3610-A2-GB41-60 March 1999 Installing a Non-Modular TDM or MCMP This section describes the procedure for adding a non-modular TDM or MCMP circuit card onto a Model 361 1 DSU and then into a COMSPHERE 3000 Series Carrier . One of two special cables that attach to the multiport connector on the TDM or MCMP circuit card mu[...]

COMSPHERE 3600 Series Data Service Units 3-8 March 1999 3610-A2-GB41-60 Press the latches to secure the DSU and TDM or MCMP circuit cards in the carrier to prevent the DSU-TDM or DSU-MCMP unit from being dislodged during installation of the DTE interfaces. Rotate the circuit pack lock on the DSU circuit card faceplate back into the closed position [...]

Model 361 1 Installation 3-9 3610-A2-GB41-60 March 1999 Figure 3-3. Non-Modular TDM or MCMP Installation[...]

COMSPHERE 3600 Series Data Service Units 3-10 March 1999 3610-A2-GB41-60 Installing a Modular TDM or MCMP This section describes the procedure for adding a modular TDM or MCMP circuit card onto a Modular 361 1 DSU and then into a COMSPHERE 3000 Series Carrier . A connector module, which is supplied with each modular TDM or MCMP card, has six ports [...]

Model 361 1 Installation 3-1 1 3610-A2-GB41-60 March 1999 T o remove the installed Modular 361 1 DSU: " Procedure 1. Use a Phillips screwdriver to loosen the screw holding the circuit pack lock on the Modular 361 1 DSU, and rotate the lock to the open position (Figure 3-5). 2. Pull out and down on the latch at the bottom of the modular DSU’ [...]

COMSPHERE 3600 Series Data Service Units 3-12 March 1999 3610-A2-GB41-60 T o install the 6-port connector module and add the TDM or MCMP option to a Modular 361 1 DSU: " Procedure 1. At the rear of the carrier , set the tabs on the 6-port connector module into the slotted grooves on the carrier ’ s backplane. (Note that the connector module [...]

Model 361 1 Installation 3-13 3610-A2-GB41-60 March 1999 Removing TDM or MCMP from an Installed Model 361 1 DSU T o remove the TDM or MCMP circuit card: " Procedure 1. For a non-modular DSU-TDM or DSU-MCMP unit , disconnect the DTE interface cable from the DSU, and disconnect the multiport cable from the TDM or MCMP . For a modular DSU-TDM or [...]

COMSPHERE 3600 Series Data Service Units 3-14 March 1999 3610-A2-GB41-60[...]

4-1 3610-A2-GB41-60 March 1999 Principles of Operation Overview 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Network T erminology 4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3600 Series Data Service Units 4-2 March 1999 3610-A2-GB41-60 Setup – DBM Rate Less Than DSU Rate 4-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual DDS Restoration 4-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LADS Op[...]

Principles of Operation 4-3 3610-A2-GB41-60 March 1999 Multipoint T ransmission In multipoint transmission (Figure 4-1), a control DSU is connected through the digital facility to multiple tributaries communicating at the same rate. T raditionally , a tributary site (often referred to as a dr op ) can transmit data only when it is polled by the fro[...]

COMSPHERE 3600 Series Data Service Units 4-4 March 1999 3610-A2-GB41-60 Modes Of Operation A DSU with TDM or MCMP can operate in one of four modes: TDM mode (MUX Funct: TDM), MCMP mode (MUX Funct: MCMP), Bridge mode (MUX Funct: CBrdg or EBrdg), or Basic mode (MUX Funct: None). TDM and Bridge modes are available to a DSU with TDM; TDM, MCMP , and Br[...]

Principles of Operation 4-5 3610-A2-GB41-60 March 1999 T ime Division Multiplexing Since transmission facilities are expensive, and frequently two or more low-speed point-to-point applications can share a high-speed digital facility , it is more efficient to share that capacity . This sharing is provided by 3600 Series DSUs equipped with a TDM ( op[...]

COMSPHERE 3600 Series Data Service Units 4-6 March 1999 3610-A2-GB41-60 Speed Characteristics In time division multiplexing, the speed of the DDS line must equal or exceed the combined speeds of digital signals to be transmitted at each DTE interface. For example, if the multiplexer in Figure 4-2 has five pairs of DTEs operating at 9.6 kbps and one[...]

Principles of Operation 4-7 3610-A2-GB41-60 March 1999 TDM Architecture Figure 4-3 shows a high-level view of the TDM architecture. Port 1 on the DSU is routed to the TDM or MCMP , where it is multiplexed with Ports 2 through 6. The aggregate data path of the multiplexer is routed back to the DDS core* by the data router . The data router is a soph[...]

COMSPHERE 3600 Series Data Service Units 4-8 March 1999 3610-A2-GB41-60 TDM Applications The TDM capability can be used in a variety of configurations to enhance DDS service. Configurations discussed here include point-to-point multiplexing, a TDM backbone circuit with extensions, diagnostic extension, digital sharing, multiplexing and digital shar[...]

Principles of Operation 4-9 3610-A2-GB41-60 March 1999 Multipoint Async Compatibility The control DSU with the Single-Port Async/Sync feature is compatible with earlier DSU releases that use a TDM with the ports configured as a single port-sharing group, as long as the control DSU’ s port speed and port-sharing group port speeds are the same. Ear[...]

COMSPHERE 3600 Series Data Service Units 4-10 March 1999 3610-A2-GB41-60 Point-to-Point Multiplexing The 3600 Series DSU operating in TDM mode can be used for point-to-point circuits at speeds of up to 64 kbps. Figure 4-6 shows a typical TDM application. In point-to-point multiplexing, the DTEs at Port 1 communicate with one another , the DTEs at P[...]

Principles of Operation 4-1 1 3610-A2-GB41-60 March 1999 TDM Backbone Circuit with Extensions Figure 4-7 shows a 3600 Series DSU with TDM as the DDS backbone with an analog private line (APL) extended circuit. In this example, Port 4, which is set to underspeed, cannot support an extended circuit because extended circuit equipment cannot accept off[...]

COMSPHERE 3600 Series Data Service Units 4-12 March 1999 3610-A2-GB41-60 Figure 4-8. Digital Sharing[...]

Principles of Operation 4-13 3610-A2-GB41-60 March 1999 Multiplexing and Digital Sharing When digital sharing is combined with the TDM or MCMP multiplexing capability , in-band framing must be taken into account. The TDM circuit card can support up to two digital-sharing groups, while the MCMP circuit card can support up to three. NOTE Port Speed a[...]

COMSPHERE 3600 Series Data Service Units 4-14 March 1999 3610-A2-GB41-60 FEP Port Sharing FEP port sharing is a method of connecting a front-end processor (FEP) to multiple control DSUs/modems to broadcast the same message over different circuits, yet receive individual responses. A typical example can be found in the retail banking environment ( F[...]

Principles of Operation 4-15 3610-A2-GB41-60 March 1999 Figure 4-10. FEP Port Sharing[...]

COMSPHERE 3600 Series Data Service Units 4-16 March 1999 3610-A2-GB41-60 TDM Backup A point-to-point multiplexing circuit can be backed up through the switched telephone network. There are five possible configurations: • Case 1 – V .32 Backup for subrate DDS ( Figure 4-1 1 ). If the DDS network is out-of-service, the network management system c[...]

Principles of Operation 4-17 3610-A2-GB41-60 March 1999 • Case 2 – V .32 Backup for high-speed DSU ( Figure 4-12 ). The DBM port speeds must be reconfigured so that their sum is less than or equal to 14.4 kbps, the PSTN line speed. When the sum equals the line speed ( now 14.4 kbps ), one of the synchronous ports must be configured for underspe[...]

COMSPHERE 3600 Series Data Service Units 4-18 March 1999 3610-A2-GB41-60 • Case 3 – V .32 Backup for high-speed DSU with extended circuits ( Figure 4-13). When the backbone circuit is restored at 14.4 kbps, the port speeds at the tributary DSU may need to be reduced. If the port speed of the extended circuit must be reduced, then the speed of t[...]

Principles of Operation 4-19 3610-A2-GB41-60 March 1999 • Case 4 – Switched 56 Backup for DSU operating at 56 kbps or less ( Figure 4-14 ) . The Switched 56 DBM provides full backup of point-to-point single port and TDM circuits operating at 56 kbps. If the DDS circuit is operating at less than 56 kbps, rate adaption is used to match the DDS sp[...]

COMSPHERE 3600 Series Data Service Units 4-20 March 1999 3610-A2-GB41-60 • Case 5 – Aggr egate Switched Backup for TDM Circuits ( Figure 4-15 ). A point-to-point TDM circuit can be backed up using the aggregate switch capability of the DSU. This may be useful if the DBMs are shared via an external switch. In this example, the control DSU should[...]

Principles of Operation 4-21 3610-A2-GB41-60 March 1999 Multichannel Multipoint The MCMP capability reduces the number of parallel multipoint digital private lines required by independent applications. Mer ging applications onto a single communications circuit reduces line, DCE, and maintenance costs (Figures 4-16 and 4-17 ). The 3600 Series DSUs w[...]

COMSPHERE 3600 Series Data Service Units 4-22 March 1999 3610-A2-GB41-60 At the control DSU, each application in Figure 4-16 is given its own channel (A, B, or C ), and the channels are assigned to Ports 1 through 3. At each tributary (branch) location, Channel A is assigned to Port 1, allowing the teller workstations connected to this port to acce[...]

Principles of Operation 4-23 3610-A2-GB41-60 March 1999 Line and Channel Speeds The MCMP capability operates only on a 56 kbps DDS multipoint circuit. Speeds of any channel can be set to the synchronous speed of 1.2, 2.4, 4.8, 7.2, 9.6, 12, 14.4, 16.8, 19.2, 38.4, or 48 kbps full-duplex. A channel can be used either synchronously or asynchronously [...]

COMSPHERE 3600 Series Data Service Units 4-24 March 1999 3610-A2-GB41-60 MCMP Architecture Figure 4-18 shows a high-level view of the MCMP architecture. The data paths are established as in the TDM mode of operation via the data router . Additional multichannel multipoint circuitry is activated on the MCMP circuit card. The port arrangement on the [...]

Principles of Operation 4-25 3610-A2-GB41-60 March 1999 MCMP Operation For proper MCMP operation, the network must be initialized, with the tributary DSUs added to the control DSU’ s poll list. Each newly installed circuit should be verified as a working single port multipoint circuit, per T echnical Publication 62310 – 1987, prior to the MCMP [...]

COMSPHERE 3600 Series Data Service Units 4-26 March 1999 3610-A2-GB41-60 MCMP The MCMP capability provides multichannel multipoint operation over a 56 kbps DDS multipoint facility . Figure 4-19 shows an example of channel-to-port assignments and channel speed selections for MCMP operation: the 48 kbps user bandwidth supports four 9600 bps channels [...]

Principles of Operation 4-27 3610-A2-GB41-60 March 1999 NOTE If the digital-sharing group consists of adjacent ports, the digital-sharing group can be created via an alternate method using the Sharing Device A (Share DevA) and Sharing Device B (Share DevB) configuration options. Refer to the MUX Configuration Options section of Chapter 5. Figure 4-[...]

COMSPHERE 3600 Series Data Service Units 4-28 March 1999 3610-A2-GB41-60 MCMP Backup Backup may be achieved in one of five ways: • Case 1 – Dedicated MCMP Backup with Switched 56 DBMs ( Figure 4-21). In this case, two DBM-Ss are dedicated to the control DSU- MCMP . T wo tributary DSUs are equipped with a Switched 56 DBM and MCMP . A DSU with a [...]

Principles of Operation 4-29 3610-A2-GB41-60 March 1999 • Case 2 – Backing up as many channels as possible to the one most important tributary location ( Figure 4-22). In this case, the control DSU and the one tributary DSU selected for dial backup must be equipped with a DBM configured with MCMP Backup set to TDM. Essentially , the backup beco[...]

COMSPHERE 3600 Series Data Service Units 4-30 March 1999 3610-A2-GB41-60 • Case 3 – Backing up one complete channel (both partial and full backup) ( Figures 4-23 and 4-24 ). In this case, each tributary DSU in need of service restoration must be equipped with a DBM and the MCMP Backup configuration option must be set to TDM, with only one port [...]

Principles of Operation 4-31 3610-A2-GB41-60 March 1999 When backup is provided for one channel, the MCMP circuit can support a total of five application channels, and the control DSU must have the backup port and the next highest port configured as an FEP port-sharing group. The channel to be backed up must appear on Port 1, 3, or 5, and the port [...]

COMSPHERE 3600 Series Data Service Units 4-32 March 1999 3610-A2-GB41-60 • Case 4 – Backing up ( up to ) three channels at each tributary via the FEP port-sharing feature ( Figure 4-25 ). In this case, each tributary DSU to be backed up must be equipped with a DBM and the MCMP Backup configuration option should be set to TDM. At the central sit[...]

Principles of Operation 4-33 3610-A2-GB41-60 March 1999 There are several restrictions to implementation: • There can be at most three DTE inputs (channels). • The sum of the channel speeds should be less than the DBM speed. • The ports that are connected using the FEP port-sharing feature should be set to the same port speed or disabled (Dis[...]

COMSPHERE 3600 Series Data Service Units 4-34 March 1999 3610-A2-GB41-60 • Case 5 – Aggr egate switched backup for MCMP circuits. An MCMP circuit can be backed up using the aggregate switch capability of the DSU. In Figure 4-27, the control DSU should be configured so that AggrSwitch (Aggregate Switch) is enabled and AgSw T iming (Aggregate Swi[...]

Principles of Operation 4-35 3610-A2-GB41-60 March 1999 Digital Bridge A TDM or MCMP circuit card can be configured to perform digital bridge capability . This is a special case of digital sharing where all active ports on the bridge are configured to one digital-sharing group with or without contention. A digital bridge can be configured as a cent[...]

COMSPHERE 3600 Series Data Service Units 4-36 March 1999 3610-A2-GB41-60 If more bridging capability is needed, additional DSU-TDM or DSU-MCMP units configured as an extended bridge (EBrdg) can be connected to the central-site bridge, the controlling bridge. Up to four extended bridges can be added to a central-site bridge to provide a total of 20 [...]

Principles of Operation 4-37 3610-A2-GB41-60 March 1999 For non-modular Model 361 1 DSUs with digital bridge capability , a digital bridge interface (crossover) cable attaches to the 60-pin high-density connector on the TDM or MCMP circuit card to provide fan-out cabling to five individual 25-pin EIA-232 connectors. Since a digital bridge port prov[...]

COMSPHERE 3600 Series Data Service Units 4-38 March 1999 3610-A2-GB41-60 Diagnostic Considerations The digital bridge joins the aggregate data stream, including data, framing bits, and diagnostics. The diagnostic communication with tributary DSUs and DBMs is transparent to the digital bridge. Commands for a tributary DSU or DBM can be addressed via[...]

Principles of Operation 4-39 3610-A2-GB41-60 March 1999 Figure 4-31. Multipoint DDS Circuit in Partial Backup[...]

COMSPHERE 3600 Series Data Service Units 4-40 March 1999 3610-A2-GB41-60 Multipoint Backup Addressing For a central-site multipoint dial backup configuration, the digital bridge is controlled by the control DSU. Each central-site DBM-V , DBM-S, or DBM-D in the COMSPHERE 3000 Series Carrier has its own physical address, which is determined by the ca[...]

Principles of Operation 4-41 3610-A2-GB41-60 March 1999 Figure 4-33. T ributary Addressing via Backup Connections[...]

COMSPHERE 3600 Series Data Service Units 4-42 March 1999 3610-A2-GB41-60 Multipoint Backup Architecture In a central-site multipoint dial backup configuration during partial backup (configuration option Bridge Rate is set to =DSU), the first port of the digital bridge is included in the digital-sharing group. Under these conditions, the digital bri[...]

Principles of Operation 4-43 3610-A2-GB41-60 March 1999 Data from the controlling DTE is broadcast to all ports in the digital-sharing group, including the first port of the digital bridge, where data is then directed through the DSU to the DDS line. When no dial backup is in effect ( Figure 4-34 ), the DDS core connected to the bridge is the only [...]

COMSPHERE 3600 Series Data Service Units 4-44 March 1999 3610-A2-GB41-60 When full backup is in effect, there is no longer any data communication from the DDS line. All tributaries are communicating with the controlling DTE via the digital bridge capability . In a central-site multipoint dial backup configuration, full backup is required if the DBM[...]

Principles of Operation 4-45 3610-A2-GB41-60 March 1999 Figure 4-37. Central-Site Bridging Architecture (56 kbps) – Active Digital Bridge Central-Site DBM-Vs/DBM-Ss/DBM-Ds At the central site, a DBM is required for each drop to be backed up. A DBM-V may be used for V .32 backup. For switched 56 kbps backup, a DBM-S is used for 4-wire access and a[...]

COMSPHERE 3600 Series Data Service Units 4-46 March 1999 3610-A2-GB41-60 DBM-V/DBM-S/DBM-D Dial on DTR Capability When the central site loses access to its remote DSUs, the DBM-Vs, DBM-Ss, and DBM-Ds can initiate backup based upon the state of the DBM’ s DTR lead. T o activate this capability , set the Primary Core configuration option to Y es an[...]

Principles of Operation 4-47 3610-A2-GB41-60 March 1999 T ributaries with Multiple Call capability should use this capability to increase their probability of connection to the bridge. The telephone numbers of all DBMs on the bridge should be entered into the tributary’ s directory . The digital bridge must be configured for the appropriate numbe[...]

COMSPHERE 3600 Series Data Service Units 4-48 March 1999 3610-A2-GB41-60 LADS Operation The 3600 Series DSUs can be used as a local area data set ( LADS ) to provide a point-to-point link between two data devices having like protocols. The network facility is a direct 4-wire connection without using a digital service. T able 4-1 summarizes the dist[...]

Principles of Operation 4-49 3610-A2-GB41-60 March 1999 Point-to-Point LADS T wo 3600 Series DSUs that are connected by a 4-wire, nonloaded metallic pair can support point-to-point LADS operation. A typical scenario involves two data devices located in the same building or in a campus environment. Either the control or the tributary DSU can provide[...]

COMSPHERE 3600 Series Data Service Units 4-50 March 1999 3610-A2-GB41-60 Figure 4-38. Bridged LADS Operation[...]

Principles of Operation 4-51 3610-A2-GB41-60 March 1999 Bridged LADS Architecture One TDM circuit card operating in Bridge mode can support up to six tributary DSUs ( Figure 4-39 ). In the transmit direction, data from the controlling DTE is broadcast to all ports in the digital-sharing group. In the receive direction, data from a tributary site fl[...]

COMSPHERE 3600 Series Data Service Units 4-52 March 1999 3610-A2-GB41-60 Digital Bridge/DSU Interface Figure 4-40 shows the interconnections between a digital bridge port and a central-site 3600 Series DSU. Since both the digital bridge port and the DSU provide a DCE interface, a special crossover cable or digital bridge interface cable is used to [...]

Principles of Operation 4-53 3610-A2-GB41-60 March 1999 SNA Diagnostic Interface The SNA Diagnostic Interface option, which is compatible with IBM’ s LPDA-2 ( Line Problem Determination Aid, Revision 2 ) protocol, enables management of 3600 Series DSUs from the DCP , a Paradyne NMS, IBM’ s NetV iew management system, or all three. All DSUs on t[...]

COMSPHERE 3600 Series Data Service Units 4-54 March 1999 3610-A2-GB41-60 Figure 4-41. Sample Configuration and LPDA-2 Addressing Assigning an Address to the T ributary DSU The following rules apply to assigning the LPDA-2 address for tributary DSUs: 1. V alid Addr esses. V alid addresses for tributary DSUs range from 1 to 255. 2. Single DTE. The tr[...]

Principles of Operation 4-55 3610-A2-GB41-60 March 1999 When digital sharing is used on a multipoint circuit, make sure there is no overlap of LPDA-2 tributary addresses. NetView-Initiated Dial Backup The 3600 Series DSUs support NetV iew-initiated dial backup in a point-to-point configuration only ( Figure 4-42 ). A DBM must be installed. The dial[...]

COMSPHERE 3600 Series Data Service Units 4-56 March 1999 3610-A2-GB41-60 Multipoint Dial Backup The 3600 Series DSUs continue to support the DSU/CSU and Line Status command and the T ransmit/Receive T est during a multipoint dial backup. The Call Out and Disconnect commands are not supported in multipoint dial backup. During a full or partial multi[...]

Principles of Operation 4-57 3610-A2-GB41-60 March 1999 Figure 4-44. Multiplexing with TDM (LPDA-2 Monitoring) Figure 4-45. Multiplexing with MCMP (LPDA-2 Monitoring)[...]

COMSPHERE 3600 Series Data Service Units 4-58 March 1999 3610-A2-GB41-60 Digital Sharing Figures 4-46 and 4-47 show how digital sharing is used with LPDA-2 monitoring. When a digital-sharing group is configured on a tributary DSU, the DSU recognizes multiple LPDA-2 addresses instead of one. The number of addresses is equal to the number of ports co[...]

Principles of Operation 4-59 3610-A2-GB41-60 March 1999 Figure 4-47. Digital Sharing in a Multipoint Circuit[...]

COMSPHERE 3600 Series Data Service Units 4-60 March 1999 3610-A2-GB41-60 Figure 4-48. Digital Sharing in a TDM Circuit (LPDA-2 Monitoring)[...]

Principles of Operation 4-61 3610-A2-GB41-60 March 1999 Figure 4-49. Digital Sharing in an MCMP Circuit (LPDA-2 Monitoring)[...]

COMSPHERE 3600 Series Data Service Units 4-62 March 1999 3610-A2-GB41-60[...]

5-1 3610-A2-GB41-60 March 1999 DSU Operations Overview 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3600 Series Data Service Units 5-2 March 1999 3610-A2-GB41-60 Overview This chapter identifies and discusses function and selection differences on the DSU when the TDM or MCMP optional feature is installed. It also discusses operation of DBM-Vs, DBM-Ss, and DBM-Ds, which are used in digital bridge applications. As with the COMSPHERE 3600 [...]

DSU Operations 5-3 3610-A2-GB41-60 March 1999 Status Indicators The status indicators on the Model 3610 DSU’ s DCP and on the Model 361 1 DSU’ s faceplate continuously provide information on the current operating condition of the DSU. All of the status indicators on the Model 3610 appear on its DCP , whereas the status indicators of the carrier[...]

COMSPHERE 3600 Series Data Service Units 5-4 March 1999 3610-A2-GB41-60 OK Alrm Status MCMP 496-12350b-01 3600 1 2 3 4 5 6 Por t TXD RXD RTS CTS DSR DTR LSD 103 104 105 106 107 108 109 OK Alrm T est Dial Status Front Panel Multirate DSU 361 1 496-12349-01 Figure 5-2. Model 361 1 DSU and MCMP Faceplates TXD RXD RTS CTS DSR DTR LSD 103 104 105 106 10[...]

DSU Operations 5-5 3610-A2-GB41-60 March 1999 T able 5-1 TDM and MCMP Status Indicators (Model 361 1 Only) Label Color Description OK Green Health and status indicator . The TDM or MCMP hardware and software are operating normally . This indicator flashes two times per second if a message is present. Alrm Red Health and status indicator . An alarm [...]

COMSPHERE 3600 Series Data Service Units 5-6 March 1999 3610-A2-GB41-60 T able 5-2 DSU with TDM or MCMP and DBM-V/DBM-S/DBM-D Status Indicators Label Color Description OK Green Health and status indicator . The device’s operation is normal. (The device has not detected any of the alarms listed in the Alrm section below .) This indicator flashes t[...]

DSU Operations 5-7 3610-A2-GB41-60 March 1999 Menu Structure The menu tree is accessed via the DCP (SDCP for a DBM-V , DBM-S, or DBM-D) and is shown in Appendix A . The menus that appear in the menu tree depend upon the DSU’ s function within the network (control or tributary), the hardware options that are installed ( DBM, TDM or MCMP , LPDA * )[...]

COMSPHERE 3600 Series Data Service Units 5-8 March 1999 3610-A2-GB41-60 • The Control ( Ctr l) branch provides the ability to display and change external leads, enable or disable the DSU-DBM, and access and monitor the external leads for Ports 1 through 6. The circuit designation status indicators (TXD, RXD, etc.) reflect the status of the select[...]

DSU Operations 5-9 3610-A2-GB41-60 March 1999 Health and Status Health and Status ( H/S ) enables you to display the status of the DSU, as well as a DBM, TDM or MCMP , if installed. It automatically scans for DSU and line conditions that are not within normal limits. There are three types of Health and Status reports: • Devic (Device Health and S[...]

COMSPHERE 3600 Series Data Service Units 5-10 March 1999 3610-A2-GB41-60 Subnetwork Health and Status Subnetwork Health and Status ( Subn ) provides status information from a DSU’ s subnetwork (all DSUs and DBMs assigned to that DSU’ s active poll list). The downstream network addresses and current statuses are listed. Use the F1 and F2 keys to[...]

DSU Operations 5-1 1 3610-A2-GB41-60 March 1999 Circuit Quality Circuit Quality ( Cir cQ ) only appears when a V .32 DBM is installed . The report shows the level and quality of the signal being received from the network by the V .32 DBM. T o access the Circuit Quality status report from the top-level menu, make the following selections: • Local [...]

COMSPHERE 3600 Series Data Service Units 5-12 March 1999 3610-A2-GB41-60 Backup Branch The Backup ( Bckup ) branch controls operation of the point-to-point dial backup feature. The Bckup selection only appears when a DBM (V .32 DBM, 4-wire Switched 56 DBM, or 2-wire Switched 56 DBM) is installed, Central-Site Bridge (CBrdg) is enabled, or Aggregate[...]

DSU Operations 5-13 3610-A2-GB41-60 March 1999 T able 5-5 Backup Branch Menu Selections Current DBM Mode Menu Selection Effect Idle Bkup Dial Dial out, establish, and switch to dialed link (Dial Backup mode). Dial out and establish dialed link (Standby mode). The data is routed over the DDS circuit. Standby Disc → Dial Disconnect dialed link (Idl[...]

COMSPHERE 3600 Series Data Service Units 5-14 March 1999 3610-A2-GB41-60 For a DSU configured as a central-site bridge with configuration option Bridge Rate set to =DDS , one of the following two screens appears: F1 DBM : Brdg with DDS Bkup F2 F3 F1 DBM : Brdg w/o DDS DrBU F2 F3 For a DSU configured as a central-site bridge with configuration optio[...]

DSU Operations 5-15 3610-A2-GB41-60 March 1999 Abort The Abort selection allows you to terminate a test that is running. When a test is running, the DBM is in T est mode and is not allowed to run any other test. T o access the Abort selection from the top-level menu, make the following selections: • Local (F1), or Remot (F2) and Address • T est[...]

COMSPHERE 3600 Series Data Service Units 5-16 March 1999 3610-A2-GB41-60 If the DSU, TDM or MCMP (MUX), or DBM fails the test, the second line displays Fail instead of Pass. Also, the Alarm ( Alrm ) status indicator lights and the failure is reported in the DSU’ s Health and Status. The Alarm indicator remains lit and the failure continues to be [...]

DSU Operations 5-17 3610-A2-GB41-60 March 1999 Loopback The Loopback ( Lpbk ) branch displays four loopbacks: • Local Loopback (LL) • DTE Loopback (DTE) • Digital Loopback (DL) • Remote Digital Loopback (RL) For additional information concerning loopbacks, refer to the COMSPHERE 3600 Series Data Service Units, Models 3610 and 361 1, Operato[...]

COMSPHERE 3600 Series Data Service Units 5-18 March 1999 3610-A2-GB41-60 While the DSU is in Local Loopback, any data transmission by the DTE is returned as received data. An operator can send a test pattern and verify correct reception of the test. The DSU does not monitor this testing. When Local Loopback is requested of an inactive core, there i[...]

DSU Operations 5-19 3610-A2-GB41-60 March 1999 DTE Loopback DTE Loopback ( DTE ) loops back the data path at the DTE/DCE interface on a per port basis without affecting the operation of the remaining ports (Figure 5-6). A message appears regarding successful loopback execution. T o access the DTE Loopback from the top-level menu, make the following[...]

COMSPHERE 3600 Series Data Service Units 5-20 March 1999 3610-A2-GB41-60 Digital Loopback Digital Loopback ( DL ) is used for manual testing of the remote end of the circuit. For example, a remote Digital Loopback may be required in order to complete an external Bit Error Rate T est (BER T) from the remote DSU. The local DSU receives test data, loo[...]

DSU Operations 5-21 3610-A2-GB41-60 March 1999 Selecting Aggr (Aggregate) loops back the user -transmitted data and the secondary channel transport data (if nondisruptive diagnostics are in effect). This disrupts secondary channel transport communications. Selecting Prt1 (Port 1) causes the loopback to occur at a point where the secondary channel t[...]

COMSPHERE 3600 Series Data Service Units 5-22 March 1999 3610-A2-GB41-60 Remote Digital Loopback Remote Digital Loopback ( RL ) is typically used to support testing by an external device, such as a protocol analyzer connected to the local DSU’ s DTE interface. A test message from the external device is looped back from the receiver to the transmi[...]

DSU Operations 5-23 3610-A2-GB41-60 March 1999 In a point-to-point network only , Remote Digital Loopback can also be initiated by the DTE by raising Pin 21 of the EIA-232-D/V .24 interface or Pin N of the V .35 interface, provided the Remote Digital Loopback by DTE (RL by DTE) configuration option is enabled. When testing a DBM, the DBM must be in[...]

COMSPHERE 3600 Series Data Service Units 5-24 March 1999 3610-A2-GB41-60 Bilateral Loopback Bilateral Loopback, shown in Figure 5-9, is a combination of DTE and Digital Loopbacks operating simultaneously in the same DSU. Bilateral Loopback or Digital Loopback is a customer-selectable configuration choice (see the General Configuration Option T able[...]

DSU Operations 5-25 3610-A2-GB41-60 March 1999 Digital T est Digital T est ( DT ) is used to check the functionality of a pair of DSUs or DBMs and the data circuit between the pair . The local DBM transmits the 51 1-bit test pattern over the network to the remote DBM for an operator-specified length of time ( Figure 5-10 ). The remote DBM receives [...]

COMSPHERE 3600 Series Data Service Units 5-26 March 1999 3610-A2-GB41-60 Figure 5-10. Digital T est[...]

DSU Operations 5-27 3610-A2-GB41-60 March 1999 Results When the message Command Complete is displayed, any key except the key returns you to the Digital T est submenu, where the Dsply and Clr selections appear . If Clr is selected while the test is running, the test starts again. F1 DBM DT : Final Err Secs: 0 F2 F3 If the test is still running, the[...]

COMSPHERE 3600 Series Data Service Units 5-28 March 1999 3610-A2-GB41-60 Figure 5-1 1. End-to-End T est Results When the message Command Complete is displayed, any key except the key returns you to the End-to- End T est submenu, where the Displ and Clr selections appear . When the test is over , the top line displays Fina l instead of Active . T ab[...]

DSU Operations 5-29 3610-A2-GB41-60 March 1999 Bit Error Rate T est The Bit Error Rate T est ( BER T ) is a session- disruptive test used to analyze the network circuit. This test requires network connection to the control and tributary DSUs or DBMs. A DTE connection to the remote DBM may be required. The originating DBM sends a continuous 51 1-bit[...]

COMSPHERE 3600 Series Data Service Units 5-30 March 1999 3610-A2-GB41-60 Figure 5-12. Bit Error Rate T ests in TDM or MCMP Mode[...]

DSU Operations 5-31 3610-A2-GB41-60 March 1999 Lamp T est The Lamp test is a test of the status indicators (LEDs) on the DSU’ s DCP (both models), and the LCDs on the Model 3610 DCP and the SDCP . When the Lamp test is performed on the Model 361 1, the alarm output is activated as well. Any indicator that does not flash is not functional, unless [...]

COMSPHERE 3600 Series Data Service Units 5-32 March 1999 3610-A2-GB41-60 Options The Options ( Opts ) submenu allows you to save, copy , and/or change configuration options. A DBM-V , DBM-S, or DBM-D can initiate a backup call using one of the following setup methods: fully automatic backup, partially automatic backup, or manual backup. T o configu[...]

DSU Operations 5-33 3610-A2-GB41-60 March 1999 The Load fr om submenu displays the following selections: DBM SA VE DSU F1 Edit/Save : Gen Bkup MUX F2 F3 PrtSp Press the key to scroll the SA VE, DSU, and DBM selections into view; press the key to scroll the PrtSp selection into view . Select MUX and the following appears: F1 Chang MUX Opts: Copy Set[...]

COMSPHERE 3600 Series Data Service Units 5-34 March 1999 3610-A2-GB41-60 Figure 5-13 maps mode of operation to the applicable Configuration Option T ables (refer to Chapter 6 of the COMSPHERE 3600 Series Data Service Units, Models 3610 and 361 1, Operator ’ s Guide for these tables). These tables are arranged by option set and presented in menu t[...]

DSU Operations 5-35 3610-A2-GB41-60 March 1999 Figure 5-13. Choosing Mode of Operation and Setting Configuration Options[...]

COMSPHERE 3600 Series Data Service Units 5-36 March 1999 3610-A2-GB41-60 T able 5-9 Complete List of MUX Setup Configuration Options Option F nction Mode of Operation Option Function TDM MCMP Bridge MUX Funct Select mode of operation: TDM, MCMP , Bridge (CBrdg or EBrdg) or Basic (None). X X X Bridge Rate Select bridge port speed; all active ports o[...]

DSU Operations 5-37 3610-A2-GB41-60 March 1999 Port Option Sets The Prt1 through Prt6 selections allow configuration options to be set on a per-port basis for TDM, MCMP , or Bridge mode. In TDM or MCMP mode, the Prt1 through Prt6 selections are available. In Bridge mode, the Prt2 through Prt6 selections are available; selections for Prt1 are set vi[...]

COMSPHERE 3600 Series Data Service Units 5-38 March 1999 3610-A2-GB41-60 T able 5-10 (1 of 2) Complete List of MUX Port Configuration Options Option F nction Mode of Function Option Function TDM MCMP Bridge Async → Sync Configure the port as asynchronous or synchronous. X X 1 Forced to Disab Async Rate Select an asynchronous rate for the port. X [...]

DSU Operations 5-39 3610-A2-GB41-60 March 1999 T able 5-10 (2 of 2) Complete List of MUX Port Configuration Options Option Function Mode of Function DSR Frc On Enable port DSR lead to remain ON as long as the DSU is working, regardless of tests and network alarms. X X X DSR on T st Specify when the port DSR lead is turned ON or Off during testing. [...]

COMSPHERE 3600 Series Data Service Units 5-40 March 1999 3610-A2-GB41-60 If in MCMP mode, the following is displayed: F1 Chang Prt Speed: DSU Chan F2 F3 Select the option set to be edited or changed. Selecting DSU allows you to change the primary port-speed configurations; selecting Chan allows you to change the channel-to-port assignment configura[...]

DSU Operations 5-41 3610-A2-GB41-60 March 1999 The Add command is executed. A message is sent to the control DSU asking that the tributary be added to the polling list. The control DSU responds by acquiring the tributary DSU onto its polling list. Acquiring the Poll List The first time the MCMP capability is activated on the network or after the ne[...]

COMSPHERE 3600 Series Data Service Units 5-42 March 1999 3610-A2-GB41-60 T able 5-12 Directory Entry and Password Characters Character 1 Use 0—9 Dialing digit (These are the only characters accepted by the Switched 56 DBM.) * T one-dialing character * # T one-dialing character # t T one dial 2 p Pulse dial 2 w W ait for dial tone 2  Delimiter [...]

DSU Operations 5-43 3610-A2-GB41-60 March 1999 Control Branch The Control ( Ctr l) branch allows you to enable or disable the DSU’ s transmitter, as well as the DBM’ s, and to display/change the status of the general purpose external DTE leads.* For a DSU operating in TDM or MCMP mode, the Control branch allows the transmitter to be enabled or [...]

COMSPHERE 3600 Series Data Service Units 5-44 March 1999 3610-A2-GB41-60 T ransmitter Control T ransmitter Control ( TxCtl ) allows you to enable or disable the DSU’ s transmitter (DDS core), the DBM’ s transmitter (the DBM’ s call setup and answering capability), or to enable or disable individual ports when operating in TDM or MCMP mode. Y [...]

DSU Operations 5-45 3610-A2-GB41-60 March 1999 F1 P r t 2 : Enable Enab Disab F2 F3 NOTE If the DSU core is disabled, enabling all ports in TDM or MCMP mode will not enable the DSU core. Y ou must specifically enable the DSU core. F1 P r t 2 : Disab Command Complete F2 F3 The local DBM can be enabled or disabled in the same manner as for the ports.[...]

COMSPHERE 3600 Series Data Service Units 5-46 March 1999 3610-A2-GB41-60 When in TDM or MCMP mode, the selections are 1, 2, 3, 4, 5, 6, or Aggr . Aggr is the communications interface between the aggregate data path (on the TDM or MCMP circuit card) and the DSU. In Bridge mode , the selections are 1, 2, 3, 4, 5, 6, or DCE. DCE is the communications [...]

A-1 3610-A2-GB41-60 March 1999 Data Service Unit Menu A[...]

COMSPHERE 3600 Series Data Service Units A-2 March 1999 3610-A2-GB41-60[...]

Data Service Unit Menu A-3 3610-A2-GB41-60 March 1999[...]

COMSPHERE 3600 Series Data Service Units A-4 March 1999 3610-A2-GB41-60[...]

B-1 3610-A2-GB41-60 March 1999 Configuration W orksheets Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instructions B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3600 Series Data Service Units B-2 March 1999 3610-A2-GB41-60 This page intentionally left blank.[...]

Configuration W orksheet for TDM Mode (1 of 3) Date:________________________________________________ Location:_____________________________________________ Local Phone Number: ( j )__________________________ Device:______________________________________________ Local Address:________________________________________ j DBM Installed Serial No.:______[...]

Configuration W orksheet for TDM Mode (2 of 3) Prt6 Options V alue Async → Sync Enab, Disab Async Rate =Sync, 1800, 1200, 600, 300, 150 AsyncBit/Char 6, 7, 8, 9, 10 Stop Bits 1, 2 Overspeed 1.25, 2.5 RTS Cntrl FrcOn, DTE TxCarrSel Const, Cntrl RxCarrSel Const, Cntrl, Mark PCC Buffer Enab, Disab Elast Stor Enab, Disab RTS/CTS Del (Chang) 0–1040 [...]

Configuration W orksheet for TDM Mode (3 of 3) DBM Options V alue Rate(Kbps) { 14.4, 12.0, 9.6, 4.8, 2.4 TxClkSource { Int, RXC, DSU, Prt1, Prt2, Prt3, Prt4, Prt5, Prt6 CarrLossDisc { Y es, No Auto Retrain { Y es, No Single Rate { Y es, No AutoAnswer Enab, Disab TxElasStor Enab, Disab RxElasStor Enab, Disab Call Setup None, Pswrd, Cllbk, Alarm RxPw[...]

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Configuration W orksheet for MCMP Mode (1 of 3) Date:________________________________________________ Location:_____________________________________________ Local Phone No.: ( j )______________________________ Device:______________________________________________ Local Address:_________________________________________ j DBM Installed Serial No.:___[...]

Configuration W orksheet for MCMP Mode (2 of 3) Prt6 Options V alue Async → Sync Enab, Disab Async Rate =Sync, 1800, 1200, 600, 300, 150 AsyncBit/Char 6, 7, 8, 9, 10 Stop Bits 1, 2 Overspeed 1.25, 2.5 RTS Cntrl FrcOn, DTE TxCarrSel Const, Cntrl RxCarrSel Const, Cntrl, Mark PCC Buffer Enab, Disab Elast Stor Enab, Disab RTS/CTS Del (Chang ) 0–104[...]

Configuration W orksheet for MCMP Mode (3 of 3) General Options V alue DTE Port * EIA232, V .35 RTS Cntrl FrcOn, DTE CTS Cntrl Std, =RTS LSD Lead STD, Delay , FrcOn CTS Lead STD, Delay , FrcOn SystemStat Enab, Disab Circ Assur Enab, Disab T st Pattern A T&T , Std RespondRDL Enab, Disab LL by DTE Enab, Disab RL by DTE Enab, Disab Bilat Lpbk Enab[...]

[...]

Configuration W orksheet for Bridge Mode (1 of 2) Date:________________________________________________ Location:_____________________________________________ Local Phone No.: ( j )______________________________ Device:______________________________________________ Local Address:_________________________________________ j DBM Installed Serial No.:_[...]

Configuration W orksheet for Bridge Mode (2 of 2) General Options V alue DTE Port EIA232, V .35 RTS Cntrl FrcOn CTS Cntrl Std, =RTS LSD Lead STD, Delay , FrcOn CTS Lead STD, Delay , FrcOn SystemStat Enab, Disab Circ Assur Enab, Disab T st Pattern A T&T , Std RespondRDL Enab, Disab LL by DTE Enab, Disab RL by DTE Enab, Disab Bilat Lpbk Enab, Dis[...]

Configuration W orksheet for Basic Mode Date:_______________________________________________ Location:____________________________________________ Local Phone No.: ( j )_____________________________ Device:_____________________________________________ Local Address:________________________________________ j DBM Installed Serial No.:________________[...]

Configuration W orksheet for Basic (DBM-V , DBM-S, or DBM-D) Date:________________________________________________ Location:_____________________________________________ Local Phone No.: ( j )______________________________ Device:______________________________________________ Local Address:_________________________________________ j DBM Installed S[...]

C-1 3610-A2-GB41-60 March 1999 Pin Assignments Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview The pin assignments for the 3600 Series TDM and MCMP connectors and interfaces are included in this appendix. Refer to them as needed[...]

COMSPHERE 3600 Series Data Service Units C-2 March 1999 3610-A2-GB41-60 Figure C-1. TDM Interface Cable (Feature Number 3600-F2-500) T able C-1 (1 of 3) Time Division Multiplexer Connector Used with Non-Modular TDM 60-Position High-Density Connector 25-Position Socket D-Sub P1 Pin Port 1 Pin 01 J3 05 02 J3 17 03 J3 08 04 J3 06 05 J3 12 06 J3 24 07 [...]

Pin Assignments C-3 3610-A2-GB41-60 March 1999 T able C-1 (2 of 3) Time Division Multiplexer Connector Used with Non-Modular TDM 60-Position High-Density Connector 25-Position Socket D-Sub P1 Pin Port 1 Pin 16 J2 20 17 J2 24 18 J3 07 19 J2 04 20 J5 02 21 J5 08 22 J2 12 23 J5 04 24 J6 07 25 J6 08 26 J6 06 27 J6 17 28 J6 03 29 J6 12 30 J4 07 31 J4 17[...]

COMSPHERE 3600 Series Data Service Units C-4 March 1999 3610-A2-GB41-60 T able C-1 (3 of 3) Time Division Multiplexer Connector Used with Non-Modular TDM 60-Position High-Density Connector 25-Position Socket D-Sub P1 Pin Port 1 Pin 46 J2 06 47 J2 17 48 J2 05 49 J2 03 50 J5 06 51 J5 05 52 J5 17 53 J5 24 54 J5 20 55 J6 15 56 J6 05 57 J6 02 58 J6 04 5[...]

Pin Assignments C-5 3610-A2-GB41-60 March 1999 Figure C-2. Digital Bridge Interface Cable (Feature Number 3600-F2-501) T able C-2 (1 of 3) Digital Bridge Connector Used with Non-Modular TDM/MCMP 60-Position High-Density Connector 25-Position Plug D-Sub P1 Pin Port 1 Pin 01 NC 2 NC 2 02 P3 24 03 P3 04 04 P3 20 05 NC 2 NC 2 06 P3 17 07 P3 06 08 P2 07[...]

COMSPHERE 3600 Series Data Service Units C-6 March 1999 3610-A2-GB41-60 T able C-2 (2 of 3) Digital Bridge Connector Used with Non-Modular TDM/MCMP 60-Position High-Density Connector 25-Position Plug D-Sub P1 Pin Port 1 Pin 14 P2 03 15 NC 2 NC 2 16 P2 06 17 P2 17 18 P3 07 19 P2 08 20 P5 03 21 P5 04 22 NC 2 NC 2 23 P5 08 24 P6 07 25 P6 04 26 P6 20 2[...]

Pin Assignments C-7 3610-A2-GB41-60 March 1999 T able C-2 (3 of 3) Digital Bridge Connector Used with Non-Modular TDM/MCMP 60-Position High-Density Connector 25-Position Plug D-Sub P1 Pin Pin Port 1 45 NC 2 NC 2 46 P2 20 47 P2 24 48 NC 2 NC 2 49 P2 02 50 P5 20 50 P5 20 51 NC 2 NC 2 52 P5 24 53 P5 17 54 P5 06 55 NC 2 NC 2 56 NC 2 NC 2 57 P6 03 58 P6[...]

COMSPHERE 3600 Series Data Service Units C-8 March 1999 3610-A2-GB41-60 Figure C-3. Pin Locations on the 60-Position High-Density Connector of the Non-Modular Carrier-Mounted TDM/MCMP Circuit Card[...]

Pin Assignments C-9 3610-A2-GB41-60 March 1999 T able C-3 60-Position High-Density Connector (TDM/MCMP Ports 2 through 6 for Model 361 1 DSU) Pin (Ports 2 – 6) 1 Circuit Name F nction 2 3 4 5 6 EIA-232 2 CCITT Function 14 41 32 20 57 BA 103 T ransmit Data (TXD) 49 13 35 43 28 BB 104 Received Data (RXD) 19 9 33 23 58 CA 105 Request-to-Send (RTS) 4[...]

COMSPHERE 3600 Series Data Service Units C-10 March 1999 3610-A2-GB41-60 T able C-4 EIA-232-D/V .24 Connector (Port 1) Pin Circuit Name F nction Pin EIA-232-D CCITT/V .24 Function 2 BA 103 T ransmit Data (TXD) 3 BB 104 Received Data (RXD) 4 CA 105 Request-to-Send (RTS) 5 CB 106 Clear-to-Send (CTS) 6 CC 107 Data Set Ready (DSR) 7 AB 102 Signal Groun[...]

Pin Assignments C-1 1 3610-A2-GB41-60 March 1999 T able C-5 V .35 Connector (Port 1) Pin(s) Circuit Name F nction Pin(s) V .35 CCITT Function B AB 102 Signal Ground (SG) P, S BA 103 a, b T ransmit Data (TXD) R, T BB 104 a, b Received Data (RXD) C CA 105 Request-to-Send (RTS) D CB 106 Clear-to-Send (CTS) E CC 107 Data Set Ready (DSR) F CF 109 Receiv[...]

COMSPHERE 3600 Series Data Service Units C-12 March 1999 3610-A2-GB41-60 99-16294 Figure C-4. Modular DSU V .35 Adapter (3000-F1-510)[...]

Pin Assignments C-13 3610-A2-GB41-60 March 1999 T able C-6 Model 3610 (Ports 2 – 6) and Modular DSU 25-Pin V .35 Connector 25-Pin Connector (Model 3610 Ports 2 – 6) 34-Pin Connector (Modular DSU V .35 Adapter) Circuit Name Pin Number Pin Number 7 B Signal Ground 4 C Request-to-Send (R TS) 5 D Clear-to-Send (CTS) 6 E Data Set Ready (DSR) 8 F Rec[...]

COMSPHERE 3600 Series Data Service Units C-14 March 1999 3610-A2-GB41-60 Figure C-5. 6-Port Connector Module (Part Number 870-1700-001 1)[...]

Pin Assignments C-15 3610-A2-GB41-60 March 1999 T able C-7 EIA-232/V .24 TDM/MCMP Connector (Modular and Standalone – Ports 2 through 6) Pin Circuit Name F nction Pin EIA-232 1 CCITT/V .25 Function 2 BA 103 T ransmit Data (TXD) 3 BB 104 Received Data (RXD) 4 CA 105 Request-to-Send (RTS) 5 CB 106 Clear-to-Send (CTS) 6 CC 107 Data Set Ready (DSR) 7[...]

COMSPHERE 3600 Series Data Service Units C-16 March 1999 3610-A2-GB41-60 Figure C-6. 6-Port V .35 Interconnect Cable (Feature Number 3600-F3-500)[...]

Pin Assignments C-17 3610-A2-GB41-60 March 1999 T able C-8 6-Port V .35 Interconnect Cable Connector 26-Pin Connector (Connector Module) 34-Pin Connector (6-port V .35 Interconnect Cable) Circuit Name Pin Number Pin Number 7 B Signal Ground (SG) 4 C Request-to-Send (RTS) 5 D Clear-to-Send (CTS) 6 E Data Set Ready (DSR) 8 F Received Line Signal Dete[...]

COMSPHERE 3600 Series Data Service Units C-18 March 1999 3610-A2-GB41-60[...]

D-1 3610-A2-GB41-60 March 1999 Configuration Scenarios Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TDM Configuration Scenarios D-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3600 Series Data Service Units D-2 March 1999 3610-A2-GB41-60 NOTE In this appendix, full backup indicates that in order to operate, all remote devices must switch data to backup lines when one or more tributaries require backup. Partial backup indicates that only affected remote devices will switch data to backup lines when the DDS line [...]

Configuration Scenarios D-3 3610-A2-GB41-60 March 1999 Configuration Options For TDM scenario 1, use the Configuration W orksheet for TDM Mode and set the configuration options that follow for both the control and tributary DSU-TDMs. • MUX – Setup MUX Funct: TDM Share DevA: Disab Share DevB: Disab P1/2 FEP Sh: Disab P3/4 FEP Sh: Disab P5/6 FEP [...]

COMSPHERE 3600 Series Data Service Units D-4 March 1999 3610-A2-GB41-60 TDM Scenario 2 – Using Switched 56 kbps Dial Backup In this configuration, shown in Figure D-2, the Switched 56 DBMs provide the capability for full backup of a TDM circuit operating at 56 kbps. (If the DDS circuit operates at less than 56 kbps, the Switched 56 DBM uses rate [...]

Configuration Scenarios D-5 3610-A2-GB41-60 March 1999 • PrtSp – DBM Prt1: 4.8 Prt2: 9.6 Prt3: 19.2 Prt4 through Prt6: Disab • DSU Rate(Kbps): 56 TxClkSource: DDS Msg Clamp: Enab AggrSwitch: Disab V .54 Lpbk: Disab • Diag – DSU Diag T ype: NonD 2nd Ch(bps): 400 Disr T ype: 3600e • Diag – DBM Diag T ype: NonD 2nd Ch(bps): 400 RemoteDia[...]

COMSPHERE 3600 Series Data Service Units D-6 March 1999 3610-A2-GB41-60 Digital Bridge Configuration Scenarios The following scenarios describe four possible backup processes, which are used in typical customer networks: automatic partial backup, multipoint dial backup with tributary digital-sharing device, and network management controlled backup.[...]

Configuration Scenarios D-7 3610-A2-GB41-60 March 1999 When 1 minute elapses, the two tributary DSUs (Figure D-4) instruct their DBMs to place a call to their respective DBM-Vs at the central site. (Each tributary DSU-DBM has been paired with a DBM-V that is associated with the control DSU-digital bridge at the central site. The tributary’ s Back[...]

COMSPHERE 3600 Series Data Service Units D-8 March 1999 3610-A2-GB41-60 Full Backup If the fault is with the central-site bridge’ s local loop ( a No Signal or a Bipolar V iolation alarm is reported for the central-site bridge ), the central-site bridge must be placed in Backup mode to eliminate problems with clock slippage (Figure D-5). This can[...]

Configuration Scenarios D-9 3610-A2-GB41-60 March 1999 Configuration Options Set the central-site bridge configuration options as follows (Configuration W orksheet for Bridge Mode) • MUX – Setup MUX Funct: CBrdg Bridge Rate: =DSU Brdg T iming: Int Share DevA: Enab Lowest Port#: DCE # Ports in Gp: 4 Port Cntrl: Host Share DevB: Disab • Prt2 th[...]

COMSPHERE 3600 Series Data Service Units D-10 March 1999 3610-A2-GB41-60 Set the configuration options for automatic partial backup of the tributary DSU as follows (Configuration W orksheet for Basic Mode): • DSU Rate(Kbps): 9.6 PrtSp(Kbps): 9.6 TxClkSource: DDS AggrSwitch: Disab • Diag – DSU Diag T ype: Mixed Disr T ype: 3600e • Diag – D[...]

Configuration Scenarios D-1 1 3610-A2-GB41-60 March 1999 Figure D-6. Multipoint Full Dial Backup with Nondisruptive Diagnostics Configuration If a network failure occurs so that the multipoint drops are lost, the 6800 Series NMS will display a T ributary Time-out alarm for the tributary DSUs, and a Facility Alarm for the control DSU. The operator t[...]

COMSPHERE 3600 Series Data Service Units D-12 March 1999 3610-A2-GB41-60 T o end the backup session via the NMS , issue disconnect commands to the control DSU and all its DBM-Ss. (The NMS restores all control and tributary DSUs to the DDS network and drops all dial backup calls by issuing an sf command and release in the Standby Facility State fiel[...]

Configuration Scenarios D-13 3610-A2-GB41-60 March 1999 • Bkup Auto Bckup: Disab BckupOnCMI: Disab AutoRestor: Disab Set the configuration options for multipoint dial backup of a tributary DSU-DBM configuration as follows (Configuration W orksheet for Basic Mode): • DSU Rate(Kbps): 56 PrtSp(Kbps): 56 TxClkSource: DDS AggrSwitch: Disab • Diag [...]

COMSPHERE 3600 Series Data Service Units D-14 March 1999 3610-A2-GB41-60 Automatic Partial Backup Using an Extended Bridge The assumed automatic partial backup configuration scenario, where there is an extended bridge, ( Figure D-7 shows when dial backup is not active, Figure D-8 shows when dial backup is active on all drops, and Figure D-9 shows w[...]

Configuration Scenarios D-15 3610-A2-GB41-60 March 1999 Figure D-7. Extended Bridge Configuration: Automatic Partial Backup – Dial Backup Not Active[...]

COMSPHERE 3600 Series Data Service Units D-16 March 1999 3610-A2-GB41-60 Figure D-8. Extended Bridge Configuration: Automatic Partial Backup Active – Dial Backup Active for All Drops[...]

Configuration Scenarios D-17 3610-A2-GB41-60 March 1999 Figure D-9. Extended Bridge Configuration: Automatic Partial Backup Active – Dial Backup Active for T wo Drops[...]

COMSPHERE 3600 Series Data Service Units D-18 March 1999 3610-A2-GB41-60 During the backup session, each pair of communicating DBMs (the DBM-V and its tributary DBM) and the DDS network are active on the bridge. When the DDS network is restored, each tributary DSU drops its network alarm. After the 5-minute restoration interval has elapsed, the DSU[...]

Configuration Scenarios D-19 3610-A2-GB41-60 March 1999 Set the extended bridge configuration options as follows (Configuration W orksheet for Bridge Mode): • MUX – Setup MUX Funct: EBrdg Bridge Rate: 9.6 Brdg T iming: Prt1 Share DevA: Enab Lowest Port#: 2 # Ports in Gp: 3 Port Cntrl: Host Share DevB: Disab • Prt2 through Prt4 (Prt5 and Prt6 [...]

COMSPHERE 3600 Series Data Service Units D-20 March 1999 3610-A2-GB41-60 Figure D-10. NMS-Controlled Full Backup Configuration – Dial Backup Not Active[...]

Configuration Scenarios D-21 3610-A2-GB41-60 March 1999 Figure D-1 1. NMS-Controlled Full Backup Configuration – Dial Backup Active[...]

COMSPHERE 3600 Series Data Service Units D-22 March 1999 3610-A2-GB41-60 As a result of a network failure in the backbone DDS network, the control DSU reports a facility alarm to the NMS. The operator at the NMS workstation is alerted by the alarm, and examines the circuit’ s network map or circuit profile to see if backup is possible. Supplement[...]

Configuration Scenarios D-23 3610-A2-GB41-60 March 1999 Configuration Options Set the central-site bridge configuration options as follows (Configuration W orksheet for Bridge Mode): • MUX – Setup MUX Funct: CBrdg Bridge Rate: 14.4 Brdg T iming: Int Share DevA: Enab Lowest Port#: DCE # Ports in Gp: 6 Port Cntrl: Host Share DevB: Disab • Prt2 [...]

COMSPHERE 3600 Series Data Service Units D-24 March 1999 3610-A2-GB41-60 Set configuration options for multipoint full dial backup using the DBM-V as follows (Configuration W orksheet for Basic (DBM-V , DBM-S, or DBM-D) Mode): • Diag – DBM Diag T ype: Disr RemoteDiag: Enhan • Diag – Gen Position: Cntrl LinkConfig: M-Pt • DBM Rate(Kbps): 1[...]

Configuration Scenarios D-25 3610-A2-GB41-60 March 1999 MCMP Configuration Scenarios There are three different MCMP scenarios described in this section: one FEP port-sharing scenario and two dial backup scenarios. MCMP Using FEP Port Sharing The 3600 Series DSUs with MCMP capability are targeted towards financial services and information processing[...]

COMSPHERE 3600 Series Data Service Units D-26 March 1999 3610-A2-GB41-60 Figure D-12. MCMP using FEP Port-Sharing Configuration[...]

Configuration Scenarios D-27 3610-A2-GB41-60 March 1999 Dedicated MCMP Backup with Switched 56 DBMs This scenario describes the Switched 56 kbps dial backup of an MCMP circuit (Figure D-13). The assumed configuration for this scenario is as follows: • Network is a 2-drop multipoint circuit operating at 56 kbps. • Customer wishes dial backup to [...]

COMSPHERE 3600 Series Data Service Units D-28 March 1999 3610-A2-GB41-60 Next, send a dial command, followed by a Dial Mode ( dm ) command to each of the DBM-Ss performing backup. (A routine command can be created to issue the command sequence automatically .) Each DBM-S responds by dialing a tributary Switched 56 DBM. When connected, the pair of D[...]

Configuration Scenarios D-29 3610-A2-GB41-60 March 1999 • Diag – Gen Position: Cntrl for control; T rib for tributary LinkConfig: M-Pt • Gen DTE Port: EIA232 R TS Control: FrcOn • Bkup Auto Bckup: N/A for control; Disab for tributary AutoRestor: N/A for control; Disab for tributary Set the extended bridge configuration options as follows (C[...]

COMSPHERE 3600 Series Data Service Units D-30 March 1999 3610-A2-GB41-60 MCMP Backup Using FEP Port Sharing This configuration provides backup of two to three channels (Figure D-14). When the remote DBM dials into the control DBM-Vs, the remote DBM automatically reverts to TDM mode and adjusts its port speeds when the dial backup speed is less than[...]

Configuration Scenarios D-31 3610-A2-GB41-60 March 1999 • If all tributary DSUs are out of service, the control MCMP will have an Out-of-Frame alarm. • If a tributary is in Backup mode and the network problem has been fixed, the only commands that can be sent to the tributary from the control MCMP are aggregate tests (e.g., the End-to-End test [...]

COMSPHERE 3600 Series Data Service Units D-32 March 1999 3610-A2-GB41-60 • Prt2 and Prt4 (Prt6 N/A) Async → Sync: Disab for control; N/A for tributary TxCarrSel: Const for control; N/A for tributary RxCarrSel: Const for control; N/A for tributary Elast Stor: Disab for control; N/A for tributary • PrtSp – DBM Prt1: N/A for control; 7.2 for t[...]

Configuration Scenarios D-33 3610-A2-GB41-60 March 1999 Set configuration options for automatic partial backup using the DSU-DBM-TDM as follows (Configuration W orksheet for TDM Mode): • MUX – Setup MUX Funct: TDM Share DevA: Disab Share DevB: Disab P1/2 FEP Sh: Enab P3/4 FEP Sh: Enab P5/6 FEP Sh: Disab • Prt1 and Prt3 (Prt5 N/A) Async → Sy[...]

COMSPHERE 3600 Series Data Service Units D-34 March 1999 3610-A2-GB41-60[...]

Index-1 3610-A2-GB41-60 March 1999 Index A abort, 5-15 adapter , V .35, C-12 adding, TDM/MCMP model 3610, 2-13 model 361 1, 3-6 address, control, DSU, 4-53 addressable devices, number of, 1-4 addresses, valid, 4-53 addressing LPDA-2, 4-53, 4-54 multipoint backup, 4-40 tributary , 4-40, 4-41 aggregate switch, 5-13 switched backup MCMP circuit, 4-34 [...]

COMSPHERE 3600 Series Data Service Units Index-2 March 1999 3610-A2-GB41-60 basic, mode, 4-4 digital test, 5-26 BER T bit error rate test, 5-29 dual, TDM/MCMP , 5-30 remote loopback, TDM/MCMP , 5-30 bilateral, loopback, 5-20, 5-23, 5-24, 5-25 bit error rate test, 5-29 TDM/MCMP , 5-30 branch, backup DBM/DBM-V/DBM-S/DBM-D, 5-12 menu selections, 5-13 [...]

Index Index-3 3610-A2-GB41-60 March 1999 DDS connections, 4-40 multipoint backup, 4-39 MCMP circuit, 4-22 restoration automatic, 4-47 manual, 4-47 dedicated backup, switched 56 DBM, D-27 MCMP , backup, switched 56 DBM, 4-28 device health and status, 5-9 test, 5-15 diagnostic considerations, 4-38 control panel, 5-2 DCP , 1-2 nondisruptive, 4-8 multi[...]

COMSPHERE 3600 Series Data Service Units Index-4 March 1999 3610-A2-GB41-60 E EIA-232/V .24, TDM/MCMP , connector , modular/standalone, C-15 EIA-232-D/V .24, connector , port 1, C-10 elastic store, per port, 1-3, 1-4 electrical, connection, 2-8 end-to-end, test, 5-27, 5-28 results, 5-28 equipment, warranty and support, 1-9 expanded, health and stat[...]

Index Index-5 3610-A2-GB41-60 March 1999 list, poll acquiring, 5-41 adding to, 5-40 local loopback, 5-17 menu subbranches, 5-7 locations, pin, non-modular , connector , circuit card, C-8 loopback, 5-17 bilateral, 5-20, 5-23, 5-24 digital, 5-20 remote, 5-22 DTE, 5-19 local, 5-17 LPDA-2 addressing, 4-54 SNA diagnostic interface, 4-53 configuration, d[...]

COMSPHERE 3600 Series Data Service Units Index-6 March 1999 3610-A2-GB41-60 multiplexing digital sharing, 4-13 MCMP , 4-57 point-to-point, 4-5, 4-10 TDM, 4-57 time division, 4-5 multipoint async compatibility , 4-9 async compatible, 4-9 network, 4-9 backup, 4-38 addressing, 4-40 architecture, 4-42 circuit digital sharing, 4-59 MCMP , 4-22 DDS circu[...]

Index Index-7 3610-A2-GB41-60 March 1999 port bridge, maximum capability , 4-36 capacity , 1-2 configuration, options, 5-38 connector , high density , model 361 1, C-9 option set, 5-37 single async/sync support, 4-8 point-to-point circuit, nondisruptive diagnostics, 4-8 speed, 1-3 configuration options, 5-39 power , terminal, 5-1 1 power -up DSU, 2[...]

COMSPHERE 3600 Series Data Service Units Index-8 March 1999 3610-A2-GB41-60 status indicators, 5-5 synchronous channels, D-2 TDM/MCMP adding flex model 3610, 2-13 model 361 1, 3-6 connector , EIA-232/V .24, C-15 digital test, 5-26 modular DSU, 3-2 non-modular , connector , C-5 non-modular DSU, 3-2 ports 2 - 6, high-density , connector , C-9 termina[...]