Communications System Owner Manual

ManualsBrandsAT&T ManualsNetwork RouterDEFINITY 7400 series

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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

GLOSSARY

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24th-channel signaling Digital signal level-1 (DS1) signaling in which the signaling for each of

the ﬁrst 23 channels is multiplexed onto the 24th channel, thereby

providing a full 64 kbps for user data on each of the ﬁrst 23 channels.

Also called clear-channel signaling. See also common-channel signaling

and primary rate interface.

800 Service A service that allows incoming calls to be made from certain geographical

areas to an assigned number for a ﬂat-rate charge based on expected usage.

Also called MEGACOM 800 service. See also MEGACOM.

access code A 1-, 2-, 3-, or 4-digit dial code used to activate or cancel a feature or

access an outgoing trunk. Star (*) or pound (#) can be used as the ﬁrst

digit of an access code.

access tie trunk A trunk that connects a main switch with a tandem switch in an electronic

tandem network (ETN). An access tie trunk can also be used to connect a

system or tandem to a serving ofﬁce or service node. Also called access

trunk.

ACD See Automatic Call Distribution.

ACU See automatic calling unit.

adaptive differential

pulse-code modulation

A 32-kbps encoding algorithm that allows up to 48 voice band channels to

be carried on one DS1 facility.

ADM See asynchronous data module.

administer To access, establish, or change parameters associated with the services and

features of a system.

ADU See asynchronous data unit.

alternate facilities

restriction level (AFRL)

An assigned alternate number that reﬂects allowed access levels and

determines both the kinds of calls that can be made and the kinds of

facilities that can be used when accessing trunks via Automatic Alternate

Routing (AAR). See also facilities restriction level.

alternate voice/data

(AVD)

A digital signal level-1 (DS1) trunk-facility translation that deﬁnes the use

of that facility for either voice or data-protocol modes.

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