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HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for Audio Control
Issue 02 (2010-11-23)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
197
15.1.2 Reading the Current Audio Channel
Read
command
AT^SWSPATH?
Function
Reads the current audio channel.
Response
z
In case of successful execution:
<CR><LF>^SWSPATH: <n><CR><LF>
<CR><LF>OK<CR><LF>
z
In case of an error: <CR><LF>ERROR<CR><LF>
15.1.3 Switching the Audio Channel
Write
command
AT^SWSPATH=<n>
Function
Switches the audio channel.
Response
z
In case of successful execution: <CR><LF>OK<CR><LF>
z
In case of an error: <CR><LF>ERROR<CR><LF>
z
In case of an error related to the MT: <CR><LF> +CME ERROR:
<err><CR><LF>
Note:
The audio channel is kept in the channel that is used in the last call after the call ends. If the
module is restarted, the audio channel will be reset to the first channel.
15.2 AT+CMIC - Command for Adjusting the Microphone
Gain Level
The AT+CMIC command adjusts the the mircophone gain level.
15.2.1 Querying the Supported Microphnoe Gain Levels
Test
command
AT+CMIC=?
Function
Queries the supported microphnoe gain levels.
Response
z
In case of successful execution:
<CR><LF>+CMIC: (list of supported <level>s) <CR><LF>
<CR><LF>OK<CR><LF>
z
In case of an error: <CR><LF>ERROR<CR><LF>