Data Hunt Groups; Data Hunt Group Configurations; Video Systems - AT&T MERLIN LEGEND Release 3.1 System Planning Manual

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 busy tone.
Guidelines for creating DHGs are contained in "Creating Data Hunt Groups,"
later 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 full-motion 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.
Data Communications
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