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6.3
USING THE AT COMMAND SET
Each command line must begin with the characters AT (the ATtention
code). Both characters of the attention code must be in either upper case
or lower case, but you may type the commands in any combination.
Type commands after the OK response. The modem ignores spaces
between characters. If you make a mistake, press the backspace key
(Cntrl-H) and type the correct character. To make a command take effect,
press <Enter>.
You can enter an AT command at any supported serial-port speed up to
115,200 bps. Your modem automatically adjusts to the connection and
command speeds (autobauds) up to 19,200 bps. After you enter an AT at
any speed up to 19,200 bps, you can enter other commands at a new
serial-port speed at any time. If you enter a command at 38,400; 57,600;
or 115,200 bps, the serial port locks at that speed.
To unlock the serial-port speed and change to another speed:
•
type AT$Bn (n is any supported serial-port speed), OR
•
type AT%U <Enter> to unlock the serial-port speed, then enter an AT
at the new speed.
•
Now enter an AT at the new speed.
The serial-port speed defaults to 115,200 bps.
NOTE
CSMIM-T1 Hardware Installation Guide
Using the AT Command Set
6-3
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