Lucent Technologies MERLIN LEGEND 6 - Manual (Page 123)

MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
System Components
Page 3-41 Adjuncts
3
NOTES:
1. For the most up-to-date information about data and video
communications, consult the
Data/Video Reference.
2. If you are using data or video communications devices with the system,
contact your Lucent Technologies representative to find out whether
there is an applications note that describes the installation and use of
your particular equipment.
The types of DCE that the system supports include:
■ Modems. The system works with a variety of modems for data
communications use within the system over analog system lines, or over
analog lines/trunks, such as standard loop-start or ground-start lines/trunks
(as well as T1 voice facilities emulating ground-start or loop-start
lines/trunks). A modem can connect an MLX telephone (with an MFM
installed). The modem serves a data terminal (such as a PC or printer) and
connects to the system through an MLX extension jack. A GPA allows
connection of a modem to an analog extension jack and analog multiline
telephone. A modem can also connect to a T/R extension jack on a 008,
012, or 016 (Release 4.0 and later) module for use with data terminals that
do not share an extension with a telephone.
■ ISDN Terminal Adapters. Also called digital modems, these devices allow
high-speed data or video communications over digital facilities.
An ISDN terminal adapter is designed for digital communications within the
system or over NI-1 BRI (National Integrated Services Digital Network
Basic Rate Interface), PRI (Primary Rate Interface), or T1 Switched 56
facilities. A terminal adapter serves the same purpose as a modem but
facilitates high-speed digital communications. Terminal adapters always
connect to the system through MLX extension jacks.
You can set up a terminal adapter to handle a variety of data terminal
equipment (DTE), including V.35 group videoconferencing systems and
Group IV (G4) fax machines.
■ Inverse Multiplexors (IMUXs). These devices are used to allow data and
video communications over two channels or B-channels of a digital facility.
■ Other Access Devices. The system also supports connection of the
Ascend Pipeline 25-Px access device (Release 4.0 and later systems) or
Ascend Pipeline 50 for data communications over digital facilities at 56, 64,
112, or 128 kbps. In addition, the built-in DCE included in some
videoconferencing systems is supported.
NOTE:
You cannot connect a DCE to a QCC.