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AUDIO COMMANDS
203 AT Commands for EV-DO-EV3 Modems
Handsfree Noise Reduction #SHFNR
Set command enables/disables the noise reduction function on audio handsfree input.
The Read command returns the active profile in the format:
#SHFNR:<mode>
Test command returns the supported range of values of <mode>.
Syntax
Command Command type
AT#SHFNR=<mode> Set
AT#SHFNR? Read
AT#SHFNR=? Test
Parameters and Values
<mode>
0 Disables noise reduction for handsfree mode. Default: 0.
1 Enables noise reduction for handsfree mode.
Notes
To save <mode> value in non-volatile memory, use the AT&W command.
Echo Canceller Configuration
Handset Echo Canceller #SHSEC
Set command enables or disables the echo canceller function on audio handset output.
Read command reports whether the echo canceller function on audio handset output is currently enabled or not,
in the format:
#SHSEC: <mode>
Test command returns the supported range of values for <mode>.
Syntax
Command Command type
AT#SHSEC =<mode> Set
AT#SHSEC? Read
AT#SHSEC=? Test
Parameters and Values
<mode>
0 Disables echo canceller for handset mode. Default: 0.
1 Enables echo canceller for handset mode.
Notes
To save <mode> value in non-volatile memory use the AT&W command.
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