Lucent Technologies MERLIN LEGEND 6 - Manual (Page 189)

MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
Features and Applications
Page 4-57 Features
4
Some data communications setups (called data workstations) include a modem
connected to an MLX telephone that is equipped with a Multi-Function Module
(MFM). MLX extensions make good data workstations because they require only
one extension jack for both the phone and the modem (the modem may be inside
or external to a data terminal or PC). A modem may also be attached directly to an
MLX extension jack. Alternatively, a modem may be attached directly to an analog
extension jack or to a General-Purpose Adapter (GPA) and analog multiline
telephone; to operate independently, the phone and GPA must each have an
analog extension jack. A modem can also be attached directly to a tip/ring (T/R)
jack on a 012, 016 (Release 4.0 and later systems), or 008 OPT module.
An Auto Answer All button must be programmed at an analog multiline telephone
that is connected by a GPA to a modem. If you use Auto Dial, Last Number Dial,
Saved Number Dial, or Authorization Codes at an analog voice and modem data
workstation with a GPA set to Auto operation (for automatic answering of data
calls), the user must first lift the handset and then activate the feature. If a feature
turns on the speakerphone at the telephone, the GPA does not work properly.
Group and personal desktop videoconferencing systems, high-speed data
communications, and Group IV (G4) fax machines are supported through digital
Basic Rate Interface (BRI), T1 Switched 56, or Primary Rate Interface (PRI) lines
(see
“Modules Supporting Lines/Trunks” on page 3–7 for more information about
these facilities). These arrangements allow high-speed data transmissions
through an MLX extension jack that accesses a digital line. An ISDN terminal
adapter or other DCE takes the place of a modem for transmitting and receiving
data. In some cases, the two B-channels of an MLX extension jack can be
combined through system programming of the 2B Data feature; this arrangement
allows communications at double the speed of a single digital channel or
B-channel, that is, at 112 or 128 kbps.
Depending upon the equipment you are using, there are many interactions
between data workstations and system features. Not all features are available at
all data workstations. These features should be disabled at most data
workstations:
■ Voice Announce to Busy
■ Call Waiting
■ Automatic Callback
Automatic Callback can be used at data workstations that include a desktop
videoconferencing and data-sharing system (see Chapter 5, “Optimizing the
System,” for more information about this system). Privacy should be turned on at
data workstations connected to analog extension jacks, 012 modules, or 016
modules (Release 4.0 and later systems).