Multi-Tech Systems CDMA Wireless Modem - Manual (Page 41)

Chapter 5 – Call Control Commands
Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 41
Microphone Mute Control +CMUT
Description: This command is used to mute the microphone input on the product (for the active
microphone set with the +SPEAKER command). This command is only allowed during a call.
Values:
<mode>
0: Microphone mute off (default value).
1: Microphone mute on.
Syntax:
Command syntax: AT+CMUT=<mode>
Command Possible Responses
AT+CMUT=?
Note: Test command +CMUT : (0-1)
OK
Note: Enable / disable mute
AT+CMUT?
Note: Ask for current value +CMUT : 0
OK
Note: Current value is OFF
AT+CMUT=1
Note: Mute ON (call active) OK
Note: Command valid
AT+CMUT?
Note: Ask for current value +CMUT : 1
OK
Note: Mute is active (call active)
AT+CMUT=0
Note: Mute OFF (call not active) +CME ERROR: 3
Note: Command not valid
Speaker & Microphone Selection +SPEAKER
Description: This command is used to select the speaker and the microphone set .
Values:
<ActiveSpkMic >
0: HEADSET
1: HANDSET
Syntax:
Command syntax: AT+SPEAKER=<ActiveSpkMic>
Command Possible Responses
AT+SPEAKER=1
Note: Speaker ONE and Micro ONE OK
Note: Command valid
AT+SPEAKER? +SPEAKER: 1
OK
Note: Speaker ONE and Micro ONE are active.