AT&T DS1/DMi/ISDN-PRI manual Trunk Type and Signaling Type Compatibility Tables

D. TRUNK TYPE AND SIGNALING TYPE COMPATIBILITY TABLES

This appendix contains three tables that define			trunk type	to signaling type compatibility for System
85 R2V1, R2V2, R2V3, R2V4,	and	Generic	2. Table	D-1,Trunk/Signaling Cross-references,
provides, on a trunk type basis,	the	default signaling type, the feature and direction compatibility,

and the valid signaling types. Table D-2,R2V4 Alternate Signaling Type Translations, provides, on a trunk type basis, a translation of other than the default, valid signaling type to “standard” signaling type for R2V4 trunks. This translation is necessary to use table D-3,Signaling Type Compatibility. This table provides, on a signaling type basis, a compatibility matrix for the standard signaling types.

Table D-1,Trunk/Signaling Cross-references,shows for each trunk type what its default signaling type value is and what other possible signaling types can be assigned to it. This table is valid for System 85 R2V1, R2V2, R2V3, and Generic 2. R2V4 alternate signaling types (columns A1-A4) must be translated by table D-2,R2V4 Alternate Signaling Type Translations.

The headings for table D-1,Trunk/Signaling Cross-references,are defined as follows:

Trunk Type

E Q U

Feature

TTYPE Value

COMPOOL EQU for trunk type (TTYPE)

Defines the feature of the trunk type. Trunk types of like feature are compatible. The feature abbreviations include:

●APLT – advanced private-line termination (includes both CCSA and EPSCS)

●CAS – Centralized Attendant Service

●CO – central office

●DID – Direct Inward Dialing

●ETN – electronic tandem network

●FX – foreign exchange

●ISDN-PRI – Integrated Service Digital Network primary rate interface

●MAIN/SAT – main/satellite

●NA – Not applicable (trunk type doesn’t provide switch to switch connectivity)

●NDMI – network digital multiplexed interface

●RA – remote access

●TIE – tie trunk

●WATS – Wide Area Telecommunications Service

D-1