Lucent Technologies MERLIN LEGEND Release 6.1 System Manager's Manual page 86

MERLIN LEGEND Communications System Release 6.1
System Manager's Guide 555-661-118
2 About the System
Data Communications Capabilities
compatible with them, which may be provided with the videoconferencing
application. A modem or other communications device can operate (with its data
terminal, of course) from its own extension, with no telephone at the extension.
Desktop videoconferencing, data transfer, and screen-sharing applications work
with Release 4.0 and later systems. They use any combination of PRI, NI-1 BRI,
and T1 Switched 56 data lines/trunks. Such systems can stand alone, and some
may also have an MLX telephone attached. Desktop videoconferencing systems
can use one MLX B-channel (for minimal video quality) or two B-channels (for
better video quality). If the system uses both MLX B-channels, you cannot use the
telephone connected to the same MLX port as the videoconferencing application
while the desktop videoconferencing system is making or receiving calls. The use
of two B-channels is called 2B data .
Issue 1
August 1998
Page 2-31