MERLIN LEGEND Communications System Release 5.0
Feature Reference
555-650-110
Issue 1
June 1997
Features
Page 453
Primary Rate Interface (PRI) and T1
PRI interacts with the ACCUNET Switched Digital Service for 56-kbps, 64-kbps
restricted, and 64-kbps clear circuit-switched data calls. T1 supports ACCUNET
Switched Digital Service or other circuit-switched data service at 56 kbps in
Release 4.0 and later.
T1 and PRI support Shared Access for Switched Services (SASS), which allows
both Megacom and Megacom 800 services to be offered over the same line. This
eliminates the need to have separate incoming and outgoing lines/trunks when
these services are chosen.
In Release 4.2 and later systems, when PRI is selected as the type of service, any
combination of the following MCI and local exchange carrier services are
supported, in addition to the AT&T services supported in prior releases:
■
MCI services include:
— MCI PRISM. For domestic outgoing long-distance and international
voice calls; domestic outgoing 56-kbps restricted as well as 64-kbps
restricted or unrestricted circuit-switched data calls.
— MCI 800. For domestic toll-free incoming voice calls.
— MCI Vnet. For domestic incoming and outgoing voice calls; or for
outgoing 56-kbps restricted as well as 64-kbps restricted or unrestricted
circuit-switched data calls.
— MCI 900. Providing 900 service numbers.
■
The system supports the following local DMS-100 local exchange carrier
services:
— Virtual Private Network (VPN). For calls between the MERLIN
LEGEND Communications System and another communications
system (for example, another MERLIN LEGEND Communications
System).
— Maximal OUTWATS and INWATS. For domestic outgoing
long-distance voice calls (not including support for bands or zone); for
domestic toll-free incoming calls.
— Foreign Exchange. For local call rating of calls from the local exchange
in the area served by the foreign exchange.
— Tie Trunk. For private exchange call rating of calls placed on a
dedicated central office facility between the MERLIN LEGEND
Communications System and another MERLIN LEGEND
Communications System.
— Integrated Services Access (also called
call-by-call service selection
).
Allows a B-channel group to carry a variety of local services.
T1 is the factory setting and, when selected for the DS1 facility, allows each of the
24 channels to be programmed to emulate tie, loop-start, ground-start, or DID
lines or Switched 56 in any combination. Therefore, a single 100D module can
take the place of 24 regular outside lines/trunks.
