Lucent Technologies MERLIN LEGEND Release 6.1 Feature Reference page 556

MERLIN LEGEND Communications System Release 6.1
Feature Reference 555-661-110
Features
Primary Rate Interface (PRI) and T1
NOTE:
Through PRI, digital data using up to 64 kbps is possible only when using a
DS1 facility; connections of up to 64 kbps for each channel are also
possible on BRI connections in Release 4.0 and later systems. Also, ESF
framing mode, CCS signaling, and B8ZS line coding are required. An
ACCULINK 3150/3160/3164 or ESF-T1 CSU must be used for DS1
connections within a building.
Tandem PRI Trunks
In Release 6.0 and later systems (Hybrid/PBX mode only), you can network
MERLIN LEGEND Communications Systems with one another and/or with
DEFINITY ECS or DEFINITY ProLogix Solutions systems. Tandem PRI and tie
trunks (T1-emulated voice/data or analog) are supported as private network
lines/trunks. PRI private trunks provide the most features and advantages. This
topic outlines the general considerations for setting up such trunks. Details are
provided in System Programming and in other sections of this guide as noted. Full
information about private networks is presented in the Network Reference.
PRI tandem trunks provide the following benefits:
Transparent Dialing of Extension Numbers on Remote Systems. Using
PRI tandem trunks, T1, or analog tie trunks for networking, a dial plan that
provides access to remote extensions is set up locally. This allows calls to
extensions on a remote system to be dialed using SA or Shared SA
buttons.
Cost-Effective ARS Dialing from a Remote System. Using tandem PRI
trunks or tandem tie (analog, or T1-emulated voice or data) trunks for
networking, users can dial ARS calls normally. The local ARS is set up to
route calls through the system that provides the best cost benefit. For
example, if the local system is in the 908 area code and a remote
networked system is in the 415 area code, calls made from the local
system to the 415 area code can be routed through the remote system.
This can mean considerable toll savings.
Faster Data Transmission. Networked PRI tandem trunks support digital
data speeds of up to 128 kbps between networked systems for enhanced
2B data videoconferencing and other data applications. Earlier releases
permit a maximum speed of 112 kbps between connected systems. T1-
emulated data channels, when used as tandem trunks, allow speeds of up
to 112 kbps.
Incoming Call Display. For MLX display telephone users, the system
manager may program the incoming call display to allow alphanumeric
labels, extension numbers, or both to be shown for calls routed among
networked systems on tandem PRI facilities. For additional information,
see "Uniform Dial Plan Features" on page 710
3 2
and "Display" on page
Issue 1
August 1998
Page 507
247.