Vdx - speakerphone duplex mode, Syntax, Defined values – Comtrol AT Commands User Manual
Page 202: Reporting current or selected values, Reporting supported range of parameter values, Result codes
AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
Conexant
102184B
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+VGS - Speaker Gain
This command causes the modem to set the speaker gain of the speakerphone function.
Syntax
+VGS=
Defined Values
Decimal number between 0 and 255 corresponding to the gain.
Reporting Current or Selected Values
Command: +VGS?
Response:
Example:
128
For the default setting.
Reporting Supported Range of Parameter Values
Command: +VGS=?
Response:
range
Example: 0-255
Result Codes
OK
ERROR
Otherwise, or if not in Voice Mode with speakerphone
enabled (+VSP=1).