User guide

3GPP TS 27.007 AT COMMANDS
73 AT Commands for EV-DO-EV3 Modems
Ringer Sound Level +CRSL
Set command selects the incoming call ringer sound level of the device.
Read command reports the current <level> setting of the call ringer in the format:
+CRSL: <level>
Test command reports <level> supported values as compound value.
+CRSL: (0-4)
Syntax
Command Command type
AT+CRSL=<level> Set
AT+CRSL? Read
AT+CRSL=? Test
Parameters and Values
<level> Ringer sound level.
0 Off.
1 Low.
2 Middle.
3 High. Default: 3.
4 Progressive.
Notes
 Reference: 3GPP TS 27.007.
Microphone Mute Control +CMUT
Set command enables or disables the muting of the microphone audio line during a voice call.
Read command reports whether the muting of the microphone audio line during a voice call is enabled or not, in
the format:
+CMUT: <n>
Test command reports the supported values for <n> parameter.
Syntax
Command Command type
AT+CMUT=<n> Set
AT+CMUT? Read
AT+CMUT=? Test
Parameters and Values
<n>
0 Mute off, microphone active. Default: 0.
1 Mute on, microphone muted.
Note: This command mutes or activates both internal and external microphone audio lines.