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TC63_ATC_V00.490

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5/24/05

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 specifies the large-scale attenuation on the microphone path of the audio device currently selected

. The write command is only available in audio modes 2 to 6. 

Multiplication factor for input samples. Parameter 

 is identical with 

 of 

Formula used to calculate microphone attenuation (negative gain):

Gain in dB = 20 * log(

/32768)

0...32767

(P)

...65535

0

Microphone is muted. 

Please note that 

 cannot be used to mute the microphone. Therefore,

any attempt to enter 0 will be rejected with error response. Value 0 is returned

only by the read command 

? after the microphone was muted with

=0 during an active call. 

32767

No attenuation on the microphone path

Values greater than 32767 will be suppressed to 32767. 

• This command is provided for compatibility with former products (e.g. M20) and is a subset of 

. The

parameter 

 is identical with 

• To make the changes persistent use 

Test Command

AT^SNFA=?

Response(s)

^SNFA: 

(list of supported 

s) 

OK

Read Command

AT^SNFA?

Response(s)

OK

Write Command

Response(s)

OK

ERROR

CME ERROR: <err>

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

SIEMENS

!

%

%

%

%

%

%

!

%

!

<atten>

(num)(^SNFW)