HP MSR series Command Reference Manual page 206

Syntax
sendat at-string
Views
Interface view. (The interface can be an asynchronous serial interface, an asynchronous/synchronous
serial interface operating in the asynchronous mode, an AUX interface, or an AM interface.)
Default command level
2: System level
Parameters
at-string: AT command string, a string of 1 to 300 characters. This argument can contain +++, A/, or be
any string beginning with AT.
For description on AT commands, see
Usage guidelines
The sendat command sends strings to the modem as AT commands without checking whether the strings
are valid commands. The characters that are in lowercase in the string are converted to the uppercase
characters automatically.
Display the result code returned by the modem by enabling debugging for modem on the interface. If the
modem is echo-on, the AT commands executed are displayed as well.
A modem accepts AT commands only when it operates in the AT command mode.
The sendat command can issue only one AT command at a time.
AT commands might change the operating state of a modem and affect the basic functions of the modem
(such as dialup). Use this command with caution or with the assistance of technicians.
Table 35 Description on common AT commands
Command
AT
A
Bn
Table 35.
Description
Commands used to configure a modem, except A/ (Repeat Last Command) and +++
(Escape Code), begin with AT. AT informs a modem of a command sent to it. If you
execute the AT command only, the modem returns OK or 0, which indicates that it is
ready to accept commands.
Enables a modem to answer an incoming call without waiting for the ringing. Use this
command when you configure to answer an incoming call manually or the modem is
configured to connect to another modem actively. All the commands following the A
command in the same command line are ignored.
Specifies the communication standard to be adopted and the transmission speed.
The communication standard can be ITU or Bell. The n argument can be 0, 1, 2 (or 3),
15, or 16.
•
B0—Specifies ITU V.22 and sets the transmission speed to 1200 bps.
•
B1—Specifies Bell 212 and sets the transmission speed to 1200 bps (the default
setting).
•
B2/B3—Disables ITU V23 reverse path.
•
B15—Specifies ITU V21 and sets the transmission speed to 300 bps.
•
B16—Specifies 103J and sets the transmission speed to 300 bps (the default
setting for Compaq Presario 192-VS and Compaq Presario 288-VS modems).
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