Setting The Echo Suppressing Function; At+Clvl - Command For Adjusting The Speaker Volume; Querying The Supported Speaker Volume Level - Huawei MG323 At Command Interface Specification

HUAWEI MG323 GSM M2M Module
AT Command Interface Specification

15.3.3 Setting the Echo Suppressing Function

Write
command
Function
Reponse
Note:
This command applies to both audio channels, but it can be executed only before a call is
initiated.
15.4 AT+CLVL - Command for Adjusting the Speaker
Volume
The AT+CLVL command adjusts the speaker volume.

15.4.1 Querying the Supported Speaker Volume Level

Test
command
Function
Response
Parameter description
<n>: integer; value range: 0 to 5.
Issue 02 (2010-11-23)
AT^ECHO=<n>
Sets the echo suppressing function.
In case of successful execution:
<CR><LF>OK<CR><LF>
In case of an error: <CR><LF>ERROR<CR><LF>
In case of an errorrelated to the MT: <CR><LF> +CME ERROR:
<err><CR><LF>
AT+CLVL=?
Queries the supported speaker volume levels.
In case of successful execution:
<CR><LF>+CLVL: (list of supported <n>s) <CR><LF>
<CR><LF>OK<CR><LF>
In case of an error: <CR><LF>ERROR<CR><LF>
1: minimum volume
5: maximum volume
0: speaker muted
4: default value
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Commands for Audio Control
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