Video Systems - Lucent Technologies MERLIN LEGEND Release 5.0 System Planning Manual

MERLIN LEGEND Communications System Release 5.0
System Planning 555-650-112
5 Data Communications
About Data and Video Communications
Data Hunt Groups
A data hunt group (DHG) is the same as a voice-extension calling group, except
that the group in this case is a group of modems or a group of ISDN terminal
adapters (not both). The group can be used to communicate with a local host
computer or workstation (gateway) on a LAN.
All modems or ISDN terminal adapters in a DHG are assigned to a single
extension number that is used both by inside and outside callers to reach the
group. Users are given the DHG number that corresponds to the pool they need to
reach.
Calls to the group are distributed among group members in a circular pattern. The
system hunts for the first available modem or ISDN terminal adapter, starting with
the one that received the last call. If all group members are unavailable, the caller
hears a ringback tone.
Guidelines for creating DHGs are contained in
in this chapter.
Data Hunt Group Configurations
The following DHG configurations work on the system:
ISDN Terminal Adapters. Allows communications with the local host
computer or a workstation (gateway) to a LAN.
Modems. Allows communications with the local host computer or a
workstation (gateway) to a LAN.

Video Systems

A video system is a hardware configuration that provides video teleconferencing.
The video systems use both B-channels (2B Data) associated with an MLX port to
achieve data rates of up to 128-kbps when using PRI or NI-1 BRI facilities, and
112-kbps when using T1 Switched 56 facilities.
There are two basic types of video teleconferencing:
Personal Video Conferencing. This type, also referred to as Desktop
Video Conferencing, typically is a single user communicating with another
individual using their PC.
Group Video Conferencing. This type, as the name implies, allows larger
groups of people to communicate with another group at a different location.
5
''Creating Data Hunt
5
5
Issue 1
June 1997
Page 5-16
Groups'', later