Siemens AC75 - Manual (Page 468)

AC75 AT Command Set
18.12 AT^SNFM
s
AC75_ATC_V01.002 Page 468 of 569 10/30/06
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18.12 AT^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 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
Parameter Description
Microphone mute control parameter.
Evaluated only during voice calls and if is omitted, e.g.
AT^SNFM
=1.
Command does not depend on audio mode.
0
Mutes the microphone.
1 (P) Activates the microphone.
Microphone supply voltage control parameter. Controls the power supply VMIC of the two microphone inputs of
the AC75 Module.
CME error is given if 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.
Test Command
AT^SNFM=?
Response(s)
^SNFM:
(list of supported s) , (list of supported s)
OK
Read Command
AT^SNFM?
Response(s)
^SNFM:
,
OK
Write Command
AT^SNFM=
[ ][, ]
Response(s)
OK
ERROR
+CME ERROR:
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
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