Lucent Technologies 555-230-024 User Manual

Features

555-230-024

Issue 5    January 1998 

Enhances DCS by allowing access to the public network for DCS connections 
between DCS switch nodes. With this feature, DCS features are no longer 
restricted to private facilities. The ISDN-PRI B-channel is used for voice commu-
nications, and the ISDN-PRI D-channel is used to transport DCS control informa-
tion.

Provides attendants with a visual indication that the number of busy trunks in a 
remote group has reached an administered level. A visual indication is also pro-
vided when all trunks in a trunk group are busy.

A sophisticated DCS rerouting capability for optimizing trunks. When you transfer 
out of your AUDIX voice messaging system, for example, DEFINITY ECS sets up 
a new path that optimizes system resources. Similar to the rerouting capabilities 
used with Q-SIG.

Enhanced DCS adds features to the existing DCS capabilities. Additional fea-
tures include:

■

Exchanging information to provide class of restriction (COR) checking 
between switches in the EDCS network

■

Providing call-progress information for the attendant

■

Allowing attendant intrusion between a main and a satellite

■

Allowing a main PBX to provide DID/CO intercept treatment rather than the 
satellite PBX

Used with Uniform Dial Plan, allows DEFINITY ECS to send any unrecognized 
number (such as an extension not administered locally) to another system for 
analysis and routing. Such unrecognized numbers can be Facility Access 
Codes, Trunk Access Codes, or extensions that are not in the Uniform Dial Plan 
table. Non-Uniform Dial Plan numbers are administered on either the First Digit 
Table (on the Dial Plan Record form) or the Second Digit Table. They also are not 
administered on the Extended Trunk Access Call Screening Table. Extended 
Trunk Access helps you make full use of automatic routing and Uniform Dial Plan.