Configuring The Modem Software - Nortel 7400 Hardware Installation
Multiservice switch
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- Reference manual (252 pages) ,
- Terminology (152 pages) ,
- Hardware installation, maintenance, and troubleshooting (438 pages)
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Configuring the modem software
Prerequisites
Procedure steps
Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Configure the modem software after you set the modem DIP switches.
Ensure that you have a computer or terminal with an RS-232 port that you can
temporarily connect to the modem while you adjust the modem settings. The
RS-232 port must be capable of running at 9600 BPS; otherwise, the modem
will not be able to communicate with the local operator port on the device.
1
On the modem, set DIP switch 8 for the smart mode to on (down).
2
Turn off the power to the modem, then turn it on again.
3
Set the computer or terminal to use software flow control, also referred to
as the data leads only mode. Otherwise the modem may not be able to
communicate with the computer or terminal.
4
Connect the modem to the RS-232 port of a computer or terminal using a
standard straight-through serial cable. Typically, the cable has a 9-pin
D-sub female connector at one end and a 25-pin D-sub male connector at
the other end.
Note: Do not use the V.24 DCE cable (PEC NTBP25xx) provided with the
device. Also, do not use the cable you want to use to connect the modem
to the CP.
5
Enter the following commands:
•
ATQ0 (with a zero, displays result codes so that the modem responds
with OK after this command and whenever an attention command
(AT) is entered)
•
ATZ4 (loads a generic hardware flow control configuration when the
cable from "Modem cable specifications" (page 175) is to be used.
Otherwise enter ATZ5. Some functionality will be disabled)
•
ATQ0 (with a zero, displays result codes and OK)
•
AT&M0 (optional command) (with a zero, disables error control; use
only if the dialing modem does not support error control)
•
AT&W0 (with a zero, writes the current configuration to non-volatile
memory, NVRAM 0)
•
ATY0 (with a zero, uses NVRAM 0 as the default configuration)
6
Disconnect the modem from the computer or terminal.
Chapter 39 Hardware procedures 217
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