GSM/GPRS Modules
GSM Module Audio Design Guide
GSM Module Audo Design Guide Confidential/Release 29 / 35
3.1.2.2. AT+CLVL
AT+CLVL is used to modify the analog gain of receiver. It can increase or reduce loudness of downlink
speech.
Parameter
If the gain-level is too high, receiving distortion would happen.
<gain-level> Range is 0 - 15
Response
+CLVL: (list of supported <level>s)
OK
Response
+CLVL: <level>
OK
Write Command
AT+CLVL=<level>
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
<level> Integer type value (0-100) with manufacturer specific range (Smallest value represents
the lowest sound level)
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