AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 111

Hardware Components
Join. This setting is used to add a recording device or a single-line
telephone to a call that is in progress on the analog multiline telephone.
You cannot originate or answer calls on this setting,
Automatic. This setting is used in two ways:
— With a device, such as an answering machine or a modem, to
— To make and receive calls on the telephone while a computer or
7500B Data Module
The Integrated Services Digital Network (ISDN) 7500B Data Module connects a
data terminal to the system on a 008 MLX or 408 GS/LS-MLX module (Release
2.0 only) so that a user can make and receive calls at a digital data station.
Instead of converting digital data signals to analog signals as a modem does,
the data module maintains a digital data format that allows transmission to
another digital station or over the PRI telephone network, On a data terminal,
the keyboard is used to dial the number.
NOTE:
A data module cannot be used
The 7500B Data Module provides a RS-232 interface for asynchronous data
terminal equipment operating at speeds of up to 19.2 kbps. The data module
also provides a CCITT V.35 interface for synchronous data terminal equipment
operating at speeds of up to 64 kbps. (Optional enhancement boards must be
ordered separately. )
The data module can be set up to handle a variety of data communications
equipment (DCE) and is the only digital adapter approved for use with the
system.
The data module's front panel has the following features (see Figure 2-15):
Power/Test LED—lights when power is supplied; flashes when tests are
performed.
Data LED—flashes to indicate an incoming data call and lights when a
call is in progress; flashes when tests are performed.
Display—displays status information and option settings.
Next, Back, and Enter buttons—used to operate the data module and
to adjust the screen's contrast.
answer calls. An Auto Answer All button is needed so that
calls can be answered automatically.
modem attached to the GPA is being used. This is called the
Simultaneous Voice and Data feature.
with a QCC.
Adapters and Adjuncts
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