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496 CHAPTER 29: MODEM CONFIGURATION COMMANDS
undo service modem-callback
View System view
Parameter None
Description 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.
By default, the callback function of modems is disabled.
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.
Example # Enable the callback function.
<Sysname> system-view
[Sysname] service modem-callback