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3. Operation
3160-A2-GB21-90 February 2001
3-55
Using the Integral Modem in Standalone DSU/CSUs
The standalone DSU/CSU’s integral modem enables your DSU/CSU to
communicate with remote devices to display alarm messages or to function as the
user interface.
The carrier-mounted DSU/CSU does not have an integral
modem.
The Call command, available from the Control branch of the menu tree, provides
the following functions to initiate and terminate modem connections:
Pass
– Initiates a call through the integral modem to access a far-end
DSU/CSU’s front panel from your DSU/CSU’s front panel (or PC attached to
the COM port).
Dial
– Initiates a call through the integral modem to a printer, ASCII terminal,
or PC. Sets up a semipermanent connection to route alarm messages to the
specified destination.
Disconnect
– Disconnects an active modem connection.
Change Directory
– Allows entry of phone numbers into the internal phone
directories.
For additional information, refer to
User Interface Configuration Options
in
Appendix C,
Configuration Options
.
Entering Numbers in the Phone Directories
The DSU/CSU has five general directories (1 through 5) and one alarm directory
(A). Use the general directories to store phone numbers for remote devices such
as standalone DSU/CSUs and ASCII printers. Use the alarm directory to store the
phone number of the primary ASCII terminal or printer you use to display or print
alarms. This function is not available for carrier-mounted DSU/CSUs because the
integral modem is not available for carrier-mounted DSU/CSUs.
Procedure
To enter or change numbers in the phone directories:
1. From the top-level menu screen, press the key until the Ctrl selection
appears on the screen.
2. Select Ctrl.
3. From the Control screen, select Call.
F1
F2
F3
Control:
Call Rel LED