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MERLIN LEGEND Communications System Release 7.0
Pocket Reference
555-670-116
Issue 1
April 1999
19
Release 4.0 Enhancements (March 1996)
ISDN Ordering Code (IOC) Package “S” (basic call handling)
service configuration and Multiline Hunt service configuration on
designated central office switches.
■ New Control Unit Modules
Release 4.0 supports a new NI-BRI line/trunk module and a
higher-capacity tip/ring module.
■ 800 NI-BRI Module
This new module connects NI-BRI trunks to the MERLIN
LEGEND System for voice, high-speed data, and video
transmission.
■ 016 Tip/Ring Module
This new module supports a 200-extension dial plan by
providing 16 ports for tip/ring devices. Applications that use a
tip/ring interface can connect to this board. All 16 ports can ring
simultaneously. Four touch-tone receivers (TTRs) are included
on the module as well. The module’s ringing frequency (default
20 Hz) can be changed, through programming, to 25 Hz for
those locations that require it.
■ Downloadable Firmware for the
016 (T/R) and NI-BRI Modules
The Personal Computer Memory Card International Association
(PCMCIA) technology, introduced in Release 3.0, continues to
support these two modules for installation and upgrade in
Release 4.0. A Release 3.0 or later processor is required for
PCMCIA technology.
■ Support for 2B Data Applications
A Lucent Technologies-certified group and desktop video
application can use two B-channels to make video/data calls
when connected to a single MLX extension jack programmed
for 2B data. The 2B data devices must be equipped with
ISDN-BRI interfaces. NI-1 BRI, PRI, or T1 Switched 56 facilities
support 2B data communications at 112 kbps (using two
56-kbps channels) or 128 kbps (using two 64-kbps B-channels).
This feature is available for Hybrid/PBX and Key modes only.
■ Support for T1 Switched 56
Digital Data Transmission
For Hybrid/PBX and Key mode systems, Release 4.0 expands
support of T1 functionality by providing access to digital data
over the public switched 56-kbps network, as well as to digital
data tie-trunk services. Users who have T1 facilities for voice
services can now use them for video or data calls at rates of 56
kbps per channel (112 kbps for video calls using 2B data). The
Release 4.0 offering also includes point-to-point connectivity
over T1 tie trunks, allowing customers to connect two MERLIN
LEGEND Communications Systems or a MERLIN LEGEND
Communications System with a Lucent Technologies DEFINITY
G1.1 Communications System or DEFINITY Enterprise
Communications Server. The two communications systems can
be co-located or can be at different sites.