Siemens MC55 AT manual Atsnfm Set microphone audio path and power supply, Atsnfm=?, Atsnfm?

17.12AT^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 MICP2 line (microphone input of the second analog audio interface).

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 MUX1 MUX2 MUX3 Charge  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. Setting applies to microphone input 2 only.

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.

MC55_ATC_V04.00	Page 413 of 475	3/17/06
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