AT&T 7500 series manual Distributed Communications System DCS, Data Connectivity AN Overview

Models: 7400 series 2500 series 7200 series 7500 series 7300 series 7100 series

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viCONTENTS

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Automatic Route Selection

ETN INTERACTIONS WITH OTHER NETWORKS

Extension Number Portability Clusters

Software-Defined Network

Release Link Trunk Networks — CAS and ACD

Distributed Communications System Clusters

Main-Satellite/Tributary Networks

ENGINEERING CONSIDERATIONS

5-7

5-7

5-8

5-9

5-12

5-14

5-14

5-14

6. DISTRIBUTED COMMUNICATIONS SYSTEM (DCS)

6-1

DCS CLUSTERS

6-2

DCS LINKS

6-2

Tie Trunks

6-3

Signaling Links

6-3

DCS SIGNALING LINK CONNECTIONS

6-8

System 75 or Generic 1 (G1) to System 75 or G1

6-8

System 85 or Generic 2 (G2) to System 85 or G2

6-10

System 75 or Generic 1 (G1) to System 85 or Generic 2 (G2)

6-12

DIMENSION Signaling Links

6-14

TRANSPARENT FEATURES

6-14

Transparent Attendant Features

6-14

Transparent Voice Terminal Features

6-17

Audio Information Exchange (AUDIX) Features Transparency

6-19

ENGINEERING CONSIDERATIONS

6-21

ADMINISTRATION CONSIDERATIONS

6-23

7. DATA CONNECTIVITY — AN OVERVIEW

7-1

DATA COMMUNICATIONS VARIABLES

Communications Protocols

Analog vs. Digital

Synchronous vs. Asynchronous

Simplex vs. Half-Duplex vs. Full-Duplex

7-2

7-2

7-4

7-4

7-5

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AT&T 7500 series, 7100 series, 2500 series, 7200 series Distributed Communications System DCS, Data Connectivity AN Overview