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Modem installation
Install a modem to enable a remote user to connect to the device for entering
and receiving local operator software commands.
Modem selection
You do not need to configure any Nortel Multiservice Switch software in order
to connect a modem to the CP. However, you must be able to configure the
modem and assemble the cable in accordance with the information contained
in the following sections:
•
Modem cable specifications (page 108)
•
Configuring the modem software (page 143)
•
Setting modem DIP switches (page 454)
The modem used as an example hookup is a 56K modem manufactured by
US Robotics, which includes their older Sportster series modems. Choose a
modem that supports the same dip switch settings and AT software
commands. The modem must also support the dumb mode so that the
Multiservice Switch device will not reconfigure the modem while it is on-hook.
Modem cable specifications
You cannot use the DCE V.24 cable assembly with product engineering code
NTBP25 to connect a modem to the device's CP port 1. The connector on the
faceplate requires a customized DB-9 cable.
You need the following components in order to assemble the cable:
•
a V.24 serial interface cable
•
a male 25-pin D-sub connector to connect to the modem
•
a male 9-pin D-sub connector to connect to port 1 on the faceplate of the
CP in the device
If your device is in a cabinet, determine the length of cable required by
measuring the distance from the faceplate of either CP through the cable
management guide to the rear of the shelf. You can install the modem inside
the cabinet and, optionally, fasten it to the cable management guides.
Copyright © 2005, Nortel
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
Nortel Confidential
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