Querying The Current Microphone Gain Level; Setting The Microphone Gain Level; At^echo - Command For Suppressing The Echo - Huawei MG323 At Command Interface Specification

HUAWEI MG323 GSM M2M Module
AT Command Interface Specification
Parameter description
<level>: integer; indicates the microphone gain level; value range: –12 to +13;
Default value: 0.

15.2.2 Querying the Current Microphone Gain Level

Read
command
Function
Response

15.2.3 Setting the Microphone Gain Level

Write
command
Function
Response
Note:
This command applies to both audio channels, but it can be executed only before a voice call
is initiated.

15.3 AT^ECHO - Command for Suppressing the Echo

The AT^ECHO command suppresses the echo.
Issue 02 (2010-11-23)
–12: minimum gain
12: maximum gain
13: microphone muted
AT+CMIC?
Queries the current microphone gain level
In case of successful execution:
<CR><LF>+CMIC: <level><CR><LF>
<CR><LF>OK<CR><LF>
In case of an error: <CR><LF>ERROR<CR><LF>
AT+CMIC=<level>
Sets the microphone gain level
In case of successful execution: <CR><LF>OK<CR><LF>
In case of an error: <CR><LF>ERROR<CR><LF>
In case of an error related to the MT: <CR><LF> +CME ERROR:
<err><CR><LF>
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Commands for Audio Control
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