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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.
201
15.4.2 Reading the Current Speaker Volume
Read
command
AT+CLVL?
Function
Reads the current speaker volume.
Response
z
In case of successful execution:
<CR><LF>+CLVL: <n><CR><LF>
<CR><LF>OK<CR><LF>
z
In case of an error: <CR><LF>ERROR<CR><LF>
15.4.3 Setting the Speaker Volume
Write
command
AT+CLVL=<n>
Function
Sets the speaker volume.
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:
z
This command applies to both audio channels. You can set the volume level to 1, 2, 3, 4, or
5 before or during a call and the setting remains effective even after the module is powered
off. You can set the volume level to 0 to mute the speaker only during a call. After the call
ends, the speaker volume is restored to the volume level before the speaker is muted.
15.5 AT+CMUT - Command for Muting and Unmuting the
Microphone
The AT+CMUT command is used to mute and unmute the microphone.