Enabling Modem Callback; Issuing An At Command To A Modem - HP MSR Router Series Wan Access Configuration Manual

Step
1. Enter system view.
2. Enter the TTY user line
view of an AM
interface.
3. Enable the modem to
obtain caller number.

Enabling modem callback

The callback feature enables a modem to disconnect an incoming call and calls back the calling party
on request.
To enable modem callback:
Step
1. Enter system view.
2. Enable modem
callback.

Issuing an AT command to a modem

CAUTION:
This task changes the modem operating state. Incorrect configuration can cause problems such as dial-up
failure. When you perform this task, make sure you understand its impact on the modem access service.
To send AT commands to a modem, you must first place the modem in AT command mode. To confirm
that you can send AT commands, enter sendat at. The modem will return OK or 0 if it is ready to accept
AT commands. For more information about commonly used AT commands, see Layer 3—WAN
Configuration Guide.
To issue an AT command to a modem:
Step
1. Enter system view.
2. Enter interface view.
Command
system-view
line { first-num1 [ last-num1 ] | tty first-num2
[ last-num2 ] }
modem caller-number resolve
[ ata-waiting-time time ]
Command
system-view
modem callback
Command
system-view
interface interface-type
interface-number
156
Remarks
N/A
N/A
By default, a modem does not
obtain the caller number when it
accepts a call from a terminal.
Remarks
N/A
By default, modem callback is disabled.
Remarks
N/A
This command is available on the
following interfaces:
•
AM interface
•
Asynchronous serial interface
•
Asynchronous/synchronous serial
interface in asynchronous mode
•
AUX interface