Isdn 7500B Data Module Front Panel - AT&T MERLIN LEGEND System Reference Manual

Hardware
ISDN 7500B Data Module
For more information on 7500B Data
Module, see the Data Guide:
5-24 Adapters
The ISDN 7500B Data Module connects a data terminal to the system on a 008
MLX module 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 ISDN-PRI telephone network. On a data
terminal, the keyboard is used to dial the number.
Note: A data module cannot be used with a QCC.
The ISDN 7500B Date Module provides an 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 setup to handle a variety of data communications
equipment (DCE) and is the only digital adapter that can be used with the
system.
The data module's front panel has the following features (see Figure 5-14):
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.
Displays. Displays status information and option settings.
Next, Back, and Enter buttons. Used to operate the data module and to
adjust the screen's contrast.
Figure 5-14 ISDN 7500B Data Module Front Panel