H3C MSR810, Command Reference Manual

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• AUX line
This command is not available on the console or VTY lines.
Examples
# On user line TTY 1, enable the modem to answer incoming calls.
<Sysname> system-view
[Sysname] line tty 1
[Sysname-line-tty1] modem enable call-in
sendat
Use
sendat
to issue an AT command to a modem.
Syntax
sendat at-string
Views
Interface view
Predefined user roles
network-admin
Parameters
at-string
: Specifies an AT command, a case-insensitive string of 1 to 300 characters. The router
automatically converts lowercase characters to uppercase when it sends the command to the
modem. Enter the
AT
prefix before all commands except
A/
(Repeat Last Command) and
+++
(Escape code). For more information about AT commands that begin with
AT
, see Table 48 .
Usage guidelines
CAUTION:
This command changes the modem operating state. Incorrect use of this command can cause
problems such as dial-up failure. When you use this command, make sure you understand the
impact of this command.
This command is available on the following interfaces:
• Asynchronous serial interface
• Asynchronous/synchronous serial interface in asynchronous mode
• AM interface
• AUX interface
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.
One
sendat
command can issue one AT command. To send multiple AT commands to a modem,
you must repeat the
sendat
command.
This command does not verify the validity of AT commands. To verify the AT command execution
result, enable modem debugging on the interface. To view the AT commands sent to the modem,
issue the
E1
command to the modem.
Table 48 describes commonly used AT commands. Support for AT commands varies by modems.