AT&T 7500 series Dimension Signaling Links, Transparent Features, Transparent Attendant Features

6-14DISTRIBUTED COMMUNICATIONS SYSTEM (DCS)

____________________________________________________________________________________________________________________________

_

PI

TN754

(DIGITAL LINE)

TN760

(TIE TRUNK)

TN722

OR TN767

(DS1)

SYSTEM 75/G1

	SIGNALING CHANNEL
DCP	RS449
	MPDM
	ANALOG OR DS1 VOICE CHANNEL

DCIU

SN233

(TIE TRUNK)

ANN11

(DS1)

SYSTEM 85/G2

WITH

TRADITIONAL

MODULE

DCIU

OR

TN760

(TIE TRUNK)

TN722

OR TN767 (DS1)

GENERIC 2

WITH

UNIVERSAL

MODULE

Figure 6-19.Short Haul Digital Signaling: System 75/G1 to System 85/G2 — Direct Via MPDM

DIMENSION Signaling Links

DIMENSION signaling links are set up identically to System 85 and Generic 2 long haul and short haul analog connections (see figures 6-11,6-12,6-14,6-15,and 6-16).

TRANSPARENT FEATURES

When DCS is installed, only a subset of all the available communications system features are transparent across DCS nodes. What follows is a discussion of the attendant, voice, and AUDIX features from which you can expect transparency when DCS is properly installed.

Transparent Attendant Features

Attendants serving several DCS nodes/endpoints can all work at one location and still provide a complete range of services. The attendant console with its alphanumeric display provides the following capabilities and information about voice terminals and trunks. For these attendant features to work transparently, there must be at least one direct tie trunk between the location where the attendants reside and each unattended node. (See table 6-3for a list of transparent attendant features and the communications systems from which you can expect transparency.)

Attendant Call Waiting

This feature allows the attendant to queue a call for a busy single-line voice terminal. A distinctive tone signals the busy terminal user that a call is waiting.