Lucent Technologies MERLIN LEGEND Release 5.0 System Planning Manual page 223

MERLIN LEGEND Communications System Release 5.0
System Planning 555-650-112
5 Data Communications
About Data and Video Communications
Personal Videoconferencing
A personal videoconferencing system typically consists of a video camera and an
audio unit connected to a PC. The PC connects directly to any available MLX port
on a 408 MLX or 008 MLX module by way of a BRI interface card.
NOTE: NOTE: NOTE:
When using the 008 MLX or 408 GS/LS-MLX module for data or video, you
must use Version 28 of the module.
The MLX port must be configured as a 2B Data port in order to provide the
necessary high-speed data connection needed to support video applications. The
network facilities used by the endpoint connected to the MLX port may be PRI, T1
Switched 56 (both provided by the 100D module), or NI-1 BRI (provided by the
800 NI-BRI module) facilities.
NOTE: NOTE: NOTE:
Some applications also provide data and application sharing and transfer
capabilities (video collaboration) in addition to video conferencing.
This configuration, in which the personal video system is the only device
connected to the MLX port, is called the Standalone configuration. Some personal
video systems also offer the capability to support a Passive Bus configuration.
See Figure 5-6
Passive Bus Configuration
In the passive bus configuration, one MLX port serves both the personal video
system and an MLX telephone. The MLX telephone is connected to a second jack
on the personal video system interface card, or to a special connector, rather than
being connected directly to the MLX module.
This configuration allows the user to make and receive voice calls on the MLX
telephone and video calls with the personal video system.
NOTE: NOTE: NOTE:
When connected in the passive bus configuration, the possibility of
contention between the MLX telephone and the personal video system for
the available MLX B-channels exists. If the personal video system is active
on a 2B Data call, the MLX telephone cannot be used to make or receive
voice calls. Conversely, if the MLX telephone is active on a voice call, the
personal video system cannot make or receive a 2B Data call, only a 1B
Data call (using only one B-channel) can be established.
for a sample connection diagram.
5
Issue 1
June 1997
Page 5-17
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