Communications System Owner Manual

ManualsBrandsAT&T ManualsNetwork RouterDEFINITY 7400 series

191

192

193

194

195

196

197

198

199

200

Table Of Contents

Table of Contents
ABOUT THIS DOCUMENT
- PREREQUISITE SKILLS AND KNOWLEDGE
- DOCUMENT ORGANIZATION
- HOW TO MAKE COMMENTS ABOUT THIS DOCUMENT
1. INTRODUCTION TO CONNECTIVITY
- TRANSMISSION TYPES
- TRANSMISSION STATES
  - VOICE TRANSMISSION
    - Entering the Switch
    - Exiting the Switch
  - DATA TRANSMISSION
- MULTIPLEXED COMMUNICATION
- TRUNKING
2. COMMUNICATION SYSTEM NETWORKING (em AN OVERVIEW
- TYPES OF NETWORKS
- NETWORK EVOLUTION
- SOFTWARE CAPABILITIES
- NETWORK CALL PROCESSING
- NETWORK ADMINISTRATION
- PRIVATE NETWORK TRUNKS
- NETWORKING FEATURE PARAMETERS
3. TANDEM TIE TRUNK NETWORKS
- INTERACTIONS WITH OTHER NETWORKS
4. MAIN-SATELLITE/TRIBUTARY (MS/T) NETWORKS THROUGH THE UDP OR MULTIPREMISES PACKAGES
- MS/T CONFIGURATIONS
  - Main-Satellite Configuration
  - Main-Tributary Configuration
- MS/T FEATURES
- ENGINEERING CONSIDERATIONS
- INTERACTIONS
5. ELECTRONIC TANDEM NETWORK (ETN) THROUGH THE ETN AND PNA PACKAGES
- ETN CONFIGURATIONS
- ETN TRUNKS
  - Access and Bypass Access Tie Trunks
  - Off-Net Trunks
- FEATURES
- ETN INTERACTIONS WITH OTHER NETWORKS
- ENGINEERING CONSIDERATIONS
6. DISTRIBUTED COMMUNICATIONS SYSTEM (DCS)
- DCS CLUSTERS
- DCS LINKS
  - Tie Trunks
  - Signaling Links
- DCS SIGNALING LINK CONNECTIONS
- TRANSPARENT FEATURES
- ENGINEERING CONSIDERATIONS
- ADMINISTRATION CONSIDERATIONS
7. DATA CONNECTIVITY - AN OVERVIEW
- DATA COMMUNICATIONS VARIABLES
- SPECIAL DATA FEATURES
8. DATA COMMUNICATIONS CAPABILITIES
- DTE CONNECTIONS
- LOCAL AREA NETWORK CONNECTIONS
- PUBLIC AND PRIVATE DATA NETWORK CONNECTIONS
  - PUBLIC DATA NETWORKS
    - Packet-Switched Public Data Networks
    - Circuit-Switched Public Data Networks
  - PRIVATE DATA NETWORKS
    - Terrestrial Private Data Network Links
    - Satellite Private Data Network Links
- TELEMARKETING HOST CONNECTIONS
  - THE ISDN GATEWAY
  - THE INTEGRATED TELEMARKETING GATEWAY
- DATA NETWORK ADMINISTRATION
9. DATA COMMUNICATIONS CONFIGURATIONS
- DSC AND PSC CONNECTIONS
- SNA NODE CONNECTIONS
- CONNECTIONS THROUGH PUBLIC OR PRIVATE DATA NETWORKS
A. RELATED DOCUMENTS
B. SYNCHRONIZATION OF DIGITAL FACILITIES
- THE NEED FOR SYNCHRONIZATION
- SYNCHRONIZATION HIERARCHY
- CHANGES TO THE SCS SOFTWARE MADE AVAILABLE VIA SOFTWARE PATCHES
- NETWORK SYNCHRONIZATION AND ENGIINEERING
- AVAILABILITY OF SYNCHRONIZATION SOURCES
- CONCLUSIONS ON SYNCHRONIZATION
- USE OF GENERIC 2 AS A SYSTEM CLOCK REFERENCE
- USE OF GENERIC 1 AS A SYSTEM CLOCK REFERENCE
C. TRUNKING TERMS AND CAPABILITIES
D. COMMUNICATIONS PROTOCOLS
- OSI MODEL
- STANDARD PROTOCOLS
- AT&T PROTOCOLS
E. LEAD DEFINITIONS
F. NETWORKING FEATURES - AVAILABILITY MATRIX
ABBREVIATIONS
GLOSSARY
INDEX

DATA COMMUNICATIONS CONFIGURATIONS 9-3

_ ______________________________________________________________________________________

PSC OR DSC

S75/S85/G1/G2

PSC OR DSC

S75/S85/G1/G2

DIGITAL

LINE PORT

COMMUNICATION TYPE MUST BE AVD OR DATA)

(24TH-CHANNEL OR ISDN-PRI MOS SIGNALING

MULTIPLEXER

COMPUTER

C. SYSTEM 75, SYSTEM 85 (R2V4), GENERIC 1 OR GENERIC 2 - PSC/DSC USING PRIVATE NETWORK DIGITAL FACILITIES

HIGH-USAGE

DATA TERMINAL

MULTIPLEXER

MPDMMPDM

4-WIRE, E&M

TIE TRUNK

MODEM MODEM DTEDTE

S85/G2

DSC DSC

S85/G2

DS1

4-WIRE, PRIVATE-LINE

MODEMS

B. SYSTEM 85 (R2V3) TO SYSTEM 85 (R2V3 OR V4) OR GENERIC 2 OVER DS1

HOST

COMPUTER

FRONT-END

PROCESSOR

EIA

INTERFACE

A. SYSTEM 75 OR GENERIC 1 - PSC USING STANDARD BUILDING WIRING

PSC —

ALSO REFERRED TO AS "SOFTWARE

CONNECTION"

HIGH-USAGE

DATA

TERMINAL

MPDM

S75/G1

ORIGINATING

DATA MODULE

DIGITAL

LINE PORT

MADU SUPPORTS

ASYNCHRONOUS ONLY

MADU

Figure 9-1. Dedicated/Permanent Switched Connections — Conﬁgurations (Sheet 1-or-2)