Siemens AC75 manual Atsnfm Set microphone audio path and power supply, Atsnfm=?, Atsnfm?

AC75 AT Command Set

18.12 AT^SNFM

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18.12AT^SNFM Set microphone audio path and power supply

The AT^SNFM read command returns the microphone mute and supply voltage status.

The AT^SNFM write command can be used to switch the microphone's audio path (muted / not muted) or to con- trol the power supply of the VMIC line for the two microphone inputs of the AC75 Module.

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.

Syntax

Test Command

AT^SNFM=?

Response(s)

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

OK

Read Command

AT^SNFM?

Response(s)

^SNFM: <MicSwitch>, <MicVccState>

OK

Write Command

AT^SNFM=[<MicSwitch>][, <MicVccCtl>]

Response(s)

OK ERROR

+CME ERROR: <err>

Reference(s)

SIEMENS

PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last

- + + + + + + - + -

Parameter Description

<MicSwitch>(num)

Microphone mute control parameter.

Evaluated only during voice calls and if <MicVccCtl> is omitted, e.g. AT^SNFM=1. Command does not depend on audio mode.

0	Mutes the microphone.
1(P)	Activates the microphone.

<MicVccCtl>(num)

Microphone supply voltage control parameter. Controls the power supply VMIC of the two microphone inputs of the AC75 Module.

CME error is given if <MicSwitch> is not omitted. Enter for example AT^SNFM=,1 or AT^SNFM=,2.

0	Supply voltage is always switched off.
1	Supply voltage is always switched on.
2(P)	Supply voltage state during voice calls is controlled by the ME. Actual value is
	determined by parameter data set of the selected audio mode.

AC75_ATC_V01.002	Page 468 of 569	10/30/06
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