Lucent Technologies MERLIN LEGEND Release 6.1 System Manager's Manual page 36

MERLIN LEGEND Communications System Release 6.1
System Manager's Guide 555-661-118
Prior Releases: Features and Enhancements
Release 4.0 Enhancements (March 1996)
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 and NI-BRI Modules
The Personal Computer Memory Card International Association (PCMCIA)
technology introduced in Release 3.0 continues to support these two new boards
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-kpbs 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
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Issue 1
August 1998
Page xxxvii