Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference page 818

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
I Applications
Videoconferencing
The system supports two types of videoconferencing systems:
Desktop Videoconferencing Workstation. This type of data workstation
typically consists of a PC or LAN workstation with one or more
videoconferencing circuit boards installed; the video system is equipped
with an ISDN-BRI interface. A microphone, software, and a video camera
are also included. This type of video workstation does not require separate
data communications equipment.
Group Videoconferencing Workstations. Group videoconferencing
equipment is usually more expensive than desktop equipment and
provides more capabilities. Such standalone systems include a built-in
monitor and are installed in conference rooms or on roll-about units. There
are two types of group videoconferencing workstations:
— ISDN Group Videoconferencing Workstations. ISDN group
— V.35 Group Videoconferencing Workstation. This type of data
NOTE:
For the most complete information about videoconferencing, see the
Data/Video Reference. In this guide,
includes details about how the system functions with 2B data.
Videoconferencing requires PRI, BRI, or T1 Switched 56 digital services for
communications at 56 or 64 kbps (kilobits per second) per channel or B-channel.
Many videoconferencing systems require two channels, for speeds of 112 or 128
kbps.
Basic video system components include the following:
Camera
"CTI (Computer Telephony Integration) Link" on page 173
"Digital Data Calls" on page 183
"Primary Rate Interface (PRI) and T1" on page 441
''Group IV Fax'' on page I-54
''ExpressRoute 1000'' on page I-69
''Ascend Pipeline 25-Px'' on page I-72
videoconferencing systems do not require separate data
communications equipment and are equipped with an ISDN-BRI
interface.
workstation usually consists of a roll-about or built-in videoconferencing
system as its data terminal equipment. The data communications
equipment consists of two ISDN terminal adapters and sometimes two
EIA 232/V.35 converters. The converters are not needed when the
equipment includes interfaces other than V.35, such as V.24.
Sometimes an inverse multiplexor (IMUX) is connected instead of the
two terminal adapters.
"Digital Data Calls" on page 183
Issue 1
June 1997
Page I-61