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2-18
Chapter 2
Cajun P550/P880/P882 Switch User Guide
Connecting a
Modem
After you connect a modem to your switch with the specified serial
cable and connectors, and configure the serial port in PPP mode, the
switch will convert the normal Distributed Computing Environment
(DCE) interface to a Data Terminal Equipment (DTE) interface that
is used by modems.
It then periodically sends the modem configuration string from the
serial console port. This synchronizes the baud rates between the
modem and the console port and configures the modem to operate
with the switch’s DTE interface.
To connect a modem (Figure2-14):
1. Attach a DB25M-RJ45 (P/N 38210003) connector to the
modem.
2. Attach the DB9M-RJ45 MDCE connector to the switch’s serial
console port on the front panel of the switch.
Figure 2-14. Typical Modem Connection to a Switch