At^snfm Mute Microphone; Audio Programming Model; Figure 1: At Audio Programming Model - Siemens MC35 Command Set

AT Command Set

8.22 AT^SNFM Mute microphone

Test command
AT^SNFM=?
Read command
AT^SNFM?
Write command
AT^SNFM=<mute>
Reference
Siemens

8.23 Audio programming model

The following figure illustrates how the signal path can be adjusted with the AT command parameters
described in the Chapters 8.19 to 8.28.
2,65V
10uF
6,8R
6,8R
MC35_ATC_01_V05.00
Response
^SNFM: (list of supported <mute> s) OK
Parameter
See write command
Response
^SNFM: <mute> OK
Parameter
See write command
Response
TA switches on/off the microphone
OK
Parameter
<mute> 0 Mute microphone
1 Microphone on
Note
This command can be used in all audio modes (1 to 6) and during a
voice call only.
Users should be aware that when they switch back and forth between dif-
ferent audio modes (for example handsfree on/off) the value of <mute>
does not change. This means that the status of mute operaton is retained
until explicitly changed.
As alternative, you can use the AT+CMUT command described in Chap-
ter 4.27
1k
1k
+0..42dB in
1k
6dB-steps
inBbcGain
1k
(0dB; -6db,
-12dB; -18dB)
outBbcGain

Figure 1: AT audio programming model

Page 208 of 256
inCalibrate
-¥...0dB
A
D
sideTone
D
+
A
speechcoder
speechdecoder
outCalibrate[n]
n = 0...4
AT parameters
15.07.2002