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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for Serial Port Control
Issue 02 (2010-11-23)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
40
4.5.3 Setting the Baud Rate of the DTE-DCE
Write
command
AT+IPR=<rate>
Function
Sets the baud rate of the DTE-DCE.
Response
z
In case of successful execution: <CR><LF>OK<CR><LF>
z
In case of an error related to the MT: <CR><LF>+CME ERROR:
<err><CR><LF>
Note:
z
To set an adaptive baud rate, run AT+IPR=0.
z
To set a fixed baud rate, ensure that the baud rates configured for the TE and TA are the
same.
z
When running the at command to set baud rate adaptation, ensure that AT ahead of the
command is in upper case.
z
After baud rate adaptation is enabled, if you want to change the baud rate of Application
Procession, do the following: Set the baud rate, disable and enable the serial port or change
the state of DTR (the interval between changing the status of the serial port or the DTR must
be over two seconds), and then synchronize the serial port with capital "AT" in the
command..
z
In multiplexing mode, a baud rate higher than 115200 bit/s is recommended
4.6 AT+CMUX - Command for Setting Multiplexing
The AT+CMUX command enables or disables the multiplexing function.
4.6.1 Querying the Supported Settings for Multiplexing
Test
command
AT+CMUX=?
Function
Queries the supported settings for multiplexing.
Response
<CR><LF>+CMUX: (list of supported <mode>s) , (list of supported
<subset>s),(list of supported <port_speed>s),(list of supported
<N1>s),(list of supported <T1>s),(list of supported <N2>s),(list of
supported <T2>s),(list of supported <T3>s),(list of supported
<k>s)<CR><LF>
<CR><LF>OK<CR><LF>
Parameter description