AT&T 2500 series manual

AT&T 555-025-201 DEFINITY ® Communications System Network and Data Connectivity[...]

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CONTENTS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A AB BO OU UT T T TH HI IS S D DO OC CU UM ME EN NT T x xv vi ii i PREREQU[...]

iv CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________________[...]

CONTENTS v _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Internal Dial Plan 2-8 Auxiliary Call Information 2-10 Automatic Alterna[...]

vi CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________________[...]

CONTENTS vii _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Parallel vs. Serial 7-6 Transmission Speed 7-6 Type of Communications [...]

viii CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

CONTENTS ix _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ USE OF GENERIC 2 AS A SYSTEM CLOCK REFERENCE B-29 USE OF GENERIC 1 AS A[...]

x CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________[...]

CONTENTS xi _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Figure 6-3. Direct Link DCS Connections 6-5 Figure 6-4. Minimized Link [...]

xii CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________[...]

CONTENTS xiii _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Figure B-11. External and Internal Reference Levels B-19 Figure B-12.[...]

xiv CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________[...]

CONTENTS xv _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 8-8. Requirements for PBX-to-PBX Private Network Spectrum Connect[...]

xvi CONTENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________[...]

ABOUT THIS DOCUMENT _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This document explains how to arrange two or more communication[...]

xviii ABOUT THIS DOCUMENT _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________________________[...]

ABOUT THIS DOCUMENT xix _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ HOW TO MAKE COMMENTS ABOUT THIS DOCUMENT Reader comment car[...]

xx ABOUT THIS DOCUMENT _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________[...]

1. INTRODUCTION TO CONNECTIVITY _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This book explains two aspects of communicating thr[...]

1-2 INTRODUCTION TO CONNECTIVITY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________[...]

TRANSMISSION TYPES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Both analog and digital transmission can be used to carry inform[...]

1-4 TRANSMISSION TYPES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________[...]

TRANSMISSION TYPES 1-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Voice: To carry voice over digital transmission faciliti[...]

1-6 TRANSMISSION TYPES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________[...]

TRANSMISSION STATES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ When you plan a communications network, there are certain rules[...]

1-8 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________________________________________________________________________[...]

TRANSMISSION STATES 1-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Incoming digital-trunk calls to a digital switch need n[...]

1-10 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________[...]

TRANSMISSION STATES 1-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DATA TRANSMISSION Because of the variety of protocols that[...]

1-12 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________[...]

TRANSMISSION STATES 1-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Protocols Used The following is a list of the protocols th[...]

1-14 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________[...]

TRANSMISSION STATES 1-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Note that both the physical-layer protocol and the DMI mod[...]

1-16 TRANSMISSION STATES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________________[...]

MULTIPLEXED COMMUNICATION _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ As signals are transmitted away from the switch and onto [...]

1-18 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Line Coding Line coding is the pattern that data ass[...]

1-20 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Signal Inversion Signal inversion is the replacement[...]

1-22 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ TABLE 1-7: Data-Module Capabilities (Part 2 of 2) _ [...]

1-24 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-25 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The framing format does not place any requirement on[...]

1-26 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Facilities using RBS carry digital data at 56 kbps. [...]

1-28 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ MULTIPLEXING OUTSIDE THE SWITCH As signals propagate[...]

1-30 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-31 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Compressing the Signal Through a process called adap[...]

1-32 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

MULTIPLEXED COMMUNICATION 1-33 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ AT&T Microwave 0 - 56K ATT terminals T1 D4/CEM D[...]

1-34 MULTIPLEXED COMMUNICATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________[...]

TRUNKING _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Trunks are the transmission medium through which voice and data signals tr[...]

1-36 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-37 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ numbers (without their accompanying location code) are sent over acce[...]

1-38 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-39 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Access can also be switched or nonswitched. • With switched access,[...]

1-40 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-41 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DMI — A DS1 link that uses the digital multiplexed interface (DMI) [...]

1-42 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-43 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 1-10. Generic 1 and Generic 2 Analog Trunks — Voice/Voice-Gra[...]

1-44 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-45 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 1-11. Generic 1 and Generic 2 Digital Trunks — Voice BCC[...]

1-46 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-47 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________[...]

1-48 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-49 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 1-13. Generic 1 and Generic 2 Digital Trunks — 56 kbps User R[...]

1-50 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

TRUNKING 1-51 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________[...]

1-52 TRUNKING _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

2. COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A network is an interconnected g[...]

2-2 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ SDN ETN LOCATION B SATELLITE MA[...]

2-4 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ network calls. In addition, ARS[...]

2-6 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • The Uniform Dial Plan funct[...]

2-8 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ LOCAL STATION OR NETWORK OR NET[...]

2-10 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Bearer capabilities — Be[...]

2-12 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Selecting a Trunk Group Variou[...]

2-14 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ PARTITION GROUP NUMBER (S75/G2[...]

2-16 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • When an IXC facility is ch[...]

2-18 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________[...]

COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW 2-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 2-3. Networking Feature [...]

2-20 COMMUNICATION SYSTEM NETWORKING — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________[...]

3. TANDEM TIE TRUNK NETWORKS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A tandem tie trunk (TTT) network is an network of DIME[...]

3-2 TANDEM TIE TRUNK NETWORKS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

4. MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________________________________________________[...]

4-2 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________[...]

MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________[...]

4-4 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________[...]

MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________[...]

4-6 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________[...]

MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________[...]

4-8 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________[...]

MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES 4-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ___________________________________________________________________________________[...]

4-10 MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ________[...]

5. ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ An ETN is a wid[...]

5-2 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________[...]

ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ ACCESS TIE TRU[...]

5-4 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________[...]

ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Off-Net Trunks[...]

5-6 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________[...]

ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Note that a Sy[...]

5-8 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________[...]

ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Like System 85[...]

5-10 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________[...]

ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ SO (6) 592-34[...]

5-12 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________[...]

ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES 5-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ CAS MAIN G1/G[...]

5-14 ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________[...]

6. DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The distributed communications system (D[...]

6-2 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Tie Trunks In ETNs, the tie trunks conn[...]

6-4 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ (See chapter 9 for detailed permanent c[...]

6-6 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A C B F G H I K L E D 1 2 3 4 1 2 3 4 1[...]

6-8 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ RS232 MTDM MTDM DCP DCP TN764 (DIGITAL [...]

6-10 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ TN760 (TIE TRUNK) TN722 OR TN767 (DS1)[...]

6-12 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ *ONE OF THE 23 AVD CHANNELS IS USED FO[...]

6-14 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 6-3. Availability of Attendant F[...]

6-16 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Transparent Voice Terminal Features Th[...]

6-18 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ feature allows the caller to leave a ?[...]

6-20 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Leave Word Calling — Leave Word [...]

6-22 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ ADMINISTRATION CONSIDERATIONS To deter[...]

6-24 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________[...]

7. DATA CONNECTIVITY — AN OVERVIEW _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This part of the AT&T Network and Data Con[...]

7-2 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________[...]

DATA CONNECTIVITY — AN OVERVIEW 7-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ SYNCHRONOUS NETWORKING AT&T 6500 MULTI- F[...]

7-4 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________[...]

DATA CONNECTIVITY — AN OVERVIEW 7-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 3 4 5 6 7 P SP ST 1 2 SYN SYN SOH TEXT ETX BC[...]

7-6 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________[...]

DATA CONNECTIVITY — AN OVERVIEW 7-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 1 1 1 1 1 1 1 1 SERIAL 0 0 0 0 0 0 0 0 0 1 1 [...]

7-8 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________[...]

DATA CONNECTIVITY — AN OVERVIEW 7-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ At the point in the communications stream whe[...]

7-10 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________[...]

DATA CONNECTIVITY — AN OVERVIEW 7-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Note that BRI terminals follow the asynchron[...]

7-12 DATA CONNECTIVITY — AN OVERVIEW _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________[...]

8. DATA COMMUNICATIONS CAPABILITIES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Your communications system can be used to conne[...]

8-2 DATA COMMUNICATIONS CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

DTE CONNECTIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Through your communications system, you can communicate with both a[...]

8-4 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________[...]

DTE CONNECTIONS 8-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DCE POSSIBILITIES DCEs that communicate with AT&T communica[...]

8-6 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________[...]

DTE CONNECTIONS 8-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ If you choose to use DCP (digital-line or GPP) ports for the co[...]

8-8 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________[...]

DTE CONNECTIONS 8-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ TABLE 8-1. DCP-Port Data Modules (part 2 of 2) _ ______________[...]

8-10 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________[...]

DTE CONNECTIONS 8-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ RS-232D 7400A TIP-RING MODEM (HAYES AT COMPATIBLE) DCP PBX TN7[...]

8-12 DTE CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________[...]

LOCAL AREA NETWORK CONNECTIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A local area network (LAN) is a collection of geogra[...]

8-14 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

LOCAL AREA NETWORK CONNECTIONS 8-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ — It can give outside users access to the LAN[...]

8-16 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

LOCAL AREA NETWORK CONNECTIONS 8-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 7400A/ ADU/ MADU REMOTE PC (RPC) CLIENT (OFF PR[...]

8-18 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

LOCAL AREA NETWORK CONNECTIONS 8-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ LAN LAN D C P D S 1 S75/S85/G1/G2 D C P D S 1 S[...]

8-20 LOCAL AREA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This section describes how to use publi[...]

8-22 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • Image viewing and transfer —[...]

8-24 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-25 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ PUBLIC SWITCHED DATA NETWORK (DOME[...]

8-26 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table 8-7. Requirements for PBX-to[...]

8-28 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS 8-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Private Terrestrial Connections Th[...]

8-30 PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

TELEMARKETING HOST CONNECTIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A telemarketing host is a processor that is used for[...]

8-32 TELEMARKETING HOST CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

TELEMARKETING HOST CONNECTIONS 8-33 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ For further details, see: • Integrated Telema[...]

8-34 TELEMARKETING HOST CONNECTIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

DATA NETWORK ADMINISTRATION _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The lines and trunks you use for data communication can[...]

8-36 DATA NETWORK ADMINISTRATION _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________________________[...]

9. DATA COMMUNICATIONS CONFIGURATIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Chapter 8 described how DTEs and LANs can com[...]

9-2 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________[...]

DATA COMMUNICATIONS CONFIGURATIONS 9-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ PSC OR DSC S75/S85/G1/G2 PSC OR DSC S75/S85/[...]

9-4 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________[...]

DATA COMMUNICATIONS CONFIGURATIONS 9-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ SNA NODE CONNECTIONS You can use your commun[...]

9-6 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________[...]

DATA COMMUNICATIONS CONFIGURATIONS 9-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ SWITCHED DIGITAL NETWORK PICTURETEL PICTURET[...]

9-8 DATA COMMUNICATIONS CONFIGURATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________[...]

A. RELATED DOCUMENTS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ GENERAL Operation User’s Guide — DDM-1000 (363-206-100) Z3[...]

A-2 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________[...]

RELATED DOCUMENTS A-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A Guide to Premises Distribution (555-400-021) Multiple Async[...]

A-4 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________[...]

RELATED DOCUMENTS A-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ System 75, System 85, and DIMENSION PBX Systems — Applicati[...]

A-6 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________[...]

RELATED DOCUMENTS A-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Sales Data Switching Sales Guide (555-035-001) Data Switching[...]

A-8 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________[...]

RELATED DOCUMENTS A-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ System 85 R2V4 to 740 Multiplexer (555-037-214) System 85 R2V[...]

A-10 RELATED DOCUMENTS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________[...]

B. SYNCHRONIZATION OF DIGITAL FACILITIES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The DS1 transmit and receive buffers (for [...]

B-2 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Notice in figure B-1-B, Options for Sync[...]

B-4 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ synchronized together. However, to provid[...]

B-6 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ NOTE: For System 85 and Generic 2, the SC[...]

B-8 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ______________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ System 85 or Generic 2 with a duplicated [...]

B-10 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • The LED in position #5 refers to the[...]

B-12 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The TN768 and TN780 circuit packs contai[...]

B-14 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ and secondary references also apply to t[...]

B-16 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 2. System 85 and Generic 2 applications [...]

B-18 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ INTERNALLY REFERENCED NODES DIGITAL TRAN[...]

B-20 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ RULE 2: A node may use a facility as a b[...]

B-22 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Facility rank ordering is generally base[...]

B-24 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-25 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ B A . . . . . . . . . . . . . . . . . . [...]

B-26 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ . . . . . . . . . . . . . . SECONDARY (B[...]

B-28 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ CONCLUSIONS ON SYNCHRONIZATION Make no a[...]

B-30 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

SYNCHRONIZATION OF DIGITAL FACILITIES B-31 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Trunk-Mode Interface (ISDN-PRI + Robbed [...]

B-32 SYNCHRONIZATION OF DIGITAL FACILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________[...]

C. TRUNKING TERMS AND CAPABILITIES _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This appendix contains a list of trunking-relate[...]

C-2 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ CCSA (or Common Control Switching Arrangement) [...]

C-4 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Derived E&M Lead Signaling A signaling inte[...]

C-6 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ (4) All out-of-building (inter-building) applic[...]

C-8 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ (3) If the other entity is a PBX, either encode[...]

C-10 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Main PBX In a main—satellite/tributary commu[...]

C-12 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Signaling Type With System 85 (R2V4) and the G[...]

C-14 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Note: Previously, most switch implementations [...]

C-16 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ TRUNKING CHARACTERISTICS TABLE D ——identi?[...]

C-18 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________[...]

C-20 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ ______________________________________________[...]

C-22 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________[...]

C-24 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-25 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________[...]

C-26 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-27 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________[...]

C-28 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-29 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________[...]

C-30 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

TRUNKING TERMS AND CAPABILITIES C-31 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ____________________________________________[...]

C-32 TRUNKING TERMS AND CAPABILITIES _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________[...]

D. COMMUNICATIONS PROTOCOLS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ A protocol is a set of rules for how transmissions are [...]

D-2 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ LEVEL 2 LEVEL 4 LEVEL 6 NETWORK LAYER SESSION LAYER AP[...]

D-4 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Session Layer The session layer, or layer 5, provides [...]

D-6 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table D-2. Some CCITT Analog Standards _______________[...]

D-8 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Further study ( ) B Channel Packet switching CCITT-ISO[...]

D-10 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ • The Bell standard for X.25 (BX.25) The primary ra[...]

D-12 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ data frames are multiplexed into a DCP and DS1 frame.[...]

D-14 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ VARIABLE LENGTH FLAG 0 1 1 1 1 1 1 0 E SPARE SCA S DA[...]

D-16 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The DCP protocol physical level requires a 4-wire dat[...]

D-18 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

COMMUNICATIONS PROTOCOLS D-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Physical Layer. This layer for BX.25 is compatible wi[...]

D-20 COMMUNICATIONS PROTOCOLS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________[...]

E. LEAD DEFINITIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ This appendix provides tables that list the lead definitions f[...]

E-2 LEAD DEFINITIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________[...]

LEAD DEFINITIONS E-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table E-2. EIA RS-232D (V.28) LEADS/DEFINITIONS _ ____________[...]

E-4 LEAD DEFINITIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________[...]

LEAD DEFINITIONS E-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table E-4. EIA RS-366 LEADS/DEFINITIONS ______________________[...]

E-6 LEAD DEFINITIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________[...]

LEAD DEFINITIONS E-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Table E-6. EIA RS-232C (V.28) LEADS SUPPORTED FOR AT&T TER[...]

E-8 LEAD DEFINITIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________[...]

F. NETWORKING FEATURES——AVAILABILITY MATRIX _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ The following list compares the net[...]

F-2 NETWORKING FEATURES——AVAILABILITY MATRIX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

NETWORKING FEATURES——AVAILABILITY MATRIX F-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ NETWORKING FEATURES——AVAILABIL[...]

F-4 NETWORKING FEATURES——AVAILABILITY MATRIX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

NETWORKING FEATURES——AVAILABILITY MATRIX F-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ NETWORKING FEATURES——AVAILABIL[...]

F-6 NETWORKING FEATURES——AVAILABILITY MATRIX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _______________________________________________[...]

ABBREVIATIONS _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 4ESS number 4 electronic switching system 5ESS number 5 electronic sw[...]

AB-2 ABBREVIATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________[...]

ABBREVIATIONS AB-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ ETA extended trunk access ETN electronic tandem network FAX facs[...]

AB-4 ABBREVIATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________[...]

ABBREVIATIONS AB-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ SDN Software-Defined Network SMT system management terminal SNA[...]

AB-6 ABBREVIATIONS _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________[...]

GLOSSARY _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 24th-channel signaling Digital signal level-1 (DS1) signaling in which the[...]

GL-2 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

GLOSSARY GL-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ AUDIX Standalone An AUDIX system that has no data link and allows AUD[...]

GL-4 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

GLOSSARY GL-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ BRI See basic rate interface . BSC See binary synchronous communicati[...]

GL-6 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

GLOSSARY GL-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ CSU The terms channel service unit and customer service unit are both[...]

GL-8 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ __________________________________________________________________________________[...]

GLOSSARY GL-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ DDC See Direct Department Calling . DDD See direct distance dialing .[...]

GL-10 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ direct outward dialing (DOD) A feature that enables a communications[...]

GL-12 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-13 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ final trunk group A last-choice trunk group that receives overflow[...]

GL-14 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-15 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ Integrated Services Digital Network (ISDN) A public or private netwo[...]

GL-16 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-17 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ MPDM See modular processor data module . MTDM See modular trunk data[...]

GL-18 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-19 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ permanent switched connection (PSC) On the System 75 and Generic 1, [...]

GL-20 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-21 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ route advance A telecommunications routine that routes outgoing call[...]

GL-22 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

GLOSSARY GL-23 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ tip and ring Tip and ring are common nomenclature derived from old c[...]

GL-24 GLOSSARY _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _________________________________________________________________________________[...]

INDEX _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ 1 10-to-7 digit conversion 2-14 2 24th channel signaling 1-27 2-wire trunk C-[...]

IN-2 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________[...]

INDEX IN-3 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ compression— Contd BCM-3200 1-31 channel expansion multiplexer 1-31 co[...]

IN-4 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________[...]

INDEX IN-5 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ fiber-optic transmission 1-32, 8-14 file transfer 8-22, 9-6 fractional[...]

IN-6 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________[...]

INDEX IN-7 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ network— Contd synchronization— Contd plan— Contd example B-20 iss[...]

IN-8 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ _____________________________________________________________________________________[...]

INDEX IN-9 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ signaling— Contd address C-1 DTMF C-3 AVD 1-41 common channel signalin[...]

IN-10 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________________[...]

INDEX IN-11 _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ _ ______________________________________________________________________________________ trunk— Contd 4-wire C-1 800 service 1-36 analog 1-9, 1-15 APLT 1-38 a[...]

IN-12 INDEX _ ___________________________________________________________________________________________________________________________ _ ___________________________________________________________________________________________________________________________ _ ____________________________________________________________________________________[...]