MTCMR-G-F4 Multi-Tech Systems, MTCMR-G-F4 Datasheet - Page 26

• Manufacturer Part Number: MTCMR-G-F4
• Description: MODEM GPRS QUAD BAND GSM GLOBAL
• Manufacturer: Multi-Tech Systems
• Series: MultiModem® iCellr

Specifications of MTCMR-G-F4

• Frequency: 850MHz, 900MHz, 1.8GHz, 1.9GHz
• Applications: General Purpose
• Interface: RS-232, USB
• Function: Transceiver, Modem
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: GSM, GPRS
• Voltage - Supply: 9 V ~ 32 V
• Package / Case: Module with Case
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Power - Output: -
• Sensitivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 881-1151; MTCMR-G-F4

Microphone Mute Control +CMUT
Speaker & Microphone Selection +SPEAKER
Multi-Tech Systems, Inc. GPRS AT Commands Reference Guide (Document Number S000293J)
Description:
Values:
Syntax:
Description:
Values:
Syntax:
This command mutes the microphone input on the product (for the active microphone set with the
+SPEAKER command). This command is only allowed during a call.
<mode>
AT+CMUT=<mode>
This specific command selects the speaker and the microphone set.
<ActiveSpkMic>
AT+SPEAKER=<ActiveSpkMic>
Command
AT+CMUT=?
Note: Test command
AT+CMUT?
Note: Ask for current value
AT+CMUT=1
Note: Mute ON (call active)
AT+CMUT?
Note: Ask for current value
AT+CMUT=0
Note: Mute OFF (call not active)
Command
AT+SPEAKER=0
Note: Speaker ONE and Micro ONE
AT+SPEAKER?
AT+SPEAKER=?
0
1
0
1
microphone mute off (default value).
microphone mute on.
Speaker One, Micro One
Speaker Two, Micro Two
Possible responses
+CMUT: (0,1)
OK
Note: Enable / disable mute
+CMUT: 0
OK
Note: Current value is OFF
OK
Note: Command valid
+CMUT: 1
OK
Note: Mute is active (call active)
+CME ERROR:3
Note: Command not valid
Possible responses
OK
Note: Command valid
+SPEAKER: 0
OK
Note: Speaker ONE and Micro ONE are active
+SPEAKER: (0,1)
OK
Chapter 5 – Call Control Commands
26