Command Reference Guide

3Com Router 5000 Family and Router 6000 Family service modem-callback ● 39
Command Reference
service modem-callback
Purpose Use the service modem-callback command to enable the callback function of
modems.
Use the undo service modem-callback command to disable the callback
function of modems.
Syntax service modem-callback
undo service modem-callback
Parameters None
Example Enable the callback function.
[3Com ] service modem-callback
View This command can be used in the following views:
■ System view
Description When a modem line is active, that is, when the modem detects the carrier or data is
being received, you may enable callback. As the
service modem-callback
command uses modem scripts to implement callback before entering PPP, it enables
callback before accounting is started. This can thus help you save cost.