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Chapter 17 – Audio Commands

Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 219

17.12 AT^SNFM Set Microphone Audio Path

Description: The read command returns the microphone mute and supply voltage status.

The write command can be used to switch the microphone’s audio path (muted/ not

muted) .

The microphone can be muted or activated by changing <MicSwitch> in all audio modes

(1 to 6) and during a voice call only. As an alternative, you can use the AT+CMUT

command to mute the microphone.

Test Command Syntax: AT^SNFM=?

Response: ^SNFM: (list of supported <MicSwitch>s)

Read Command Syntax: AT^SNFM?

Response: ^SNFM: <MicSwitch>

Write Command Syntax: AT^SNFM=[<MicSwitch>]

Response: OK

Parameter Description:

Microphone mute control parameter.

Evaluated during voice calls and if <MicVccCtl> is omitted only (e.g., AT^SNFM=1).

Command does not depend on audio mode.

0 Mutes the microphone.

1 Activates the microphone. Default.

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Multitech MTCBA-C-IP-N1 Spezifikationen Seite 219