User guide

AUDIO COMMANDS
197 AT Commands for EV-DO-EV3 Modems
Handset Sidetone #SHSSD
Set command enables or disables the sidetone on handset audio output.
Read command reports whether the headset sidetone is currently enabled or not, in the format:
#SHSSD: <mode>
Test command returns the supported range of values of <mode>.
Syntax
Command Command type
AT#SHSSD=<mode> Set
AT#SHSSD? Read
AT#SHSSD=? Test
Parameters and Values
<mode>
0 Disables the handset sidetone. C2 Default: 0.
1 Enables the handset sidetone. EV3 Default: 1.
Notes
 To save the value of <mode> in non-volatile memory issue the AT&W command.
Speaker Mute Control #SPKMUT
Set command enables or disables the global muting of the speaker audio line, for every audio output—ring,
incoming SMS voice, network coverage.
Read command reports whether the muting of the speaker audio line during a voice call is enabled or not, in the
format:
#SPKMUT: <n>
Test command reports the supported values for <n>.
Syntax
Command Command type
AT#SPKMUT=<n> Set
AT#SPKMUT? Read
AT#SPKMUT=? Test
Parameters and Values
<n>
0 Mute off, speaker active. Default: 0.
1 Mute on, speaker muted.
Notes
 Set command mutes/activates both speaker audio paths, internal speaker and external speaker.