Data Communications - AT&T MERLIN LEGEND Release 3.1 System Planning Manual

Data Communications

In addition to voice communications capabilities, the system also supports data
and video communications to enable users to send or receive data, or establish
group or personal video conferences.
Planning for data and video communications consists of the following tasks:
1. Planning how the data and/or video equipment connects to extension
jacks on the control unit. This depends on the type of data stations or
video systems.
2. Creating modem/ISDN terminal adapter pools (pairs of modems and
ISDN terminal adapters) to enable calls between the two types of data
stations: modem data stations and ISDN terminal adapter data stations.
3. Assigning lines/trunks to data stations and video systems.
4. Assigning features to data stations.
5. Creating data hunt groups (DHGs), that is, data calling groups, if there
are modem/ISDN terminal adapter pools with more than one data
communications equipment pair (a modem and an ISDN terminal
adapter), or to designate a group of either modems or ISDN terminal
adapters to receive calls to communicate with a local host computer or
LAN workstation.
NOTE:
Modem/ISDN terminal adapter pools are not described in this book. For
information see application note, MERLIN LEGEND Communications
System Modem Pooling .
6. Configuring MLX jacks for 2B Data (2 B-channel) connectivity. This allows
video systems to use both B-channels on a single MLX jack to establish
high-speed full-motion video connections at data rates of up to 128-kbps.
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Data Communications
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