At^snfa Set Or Query Of Microphone Attenuation - Siemens TC63 Command Set

TC63 AT Command Set
18.9 AT^SNFA
18.9

AT^SNFA Set or query of microphone attenuation

specifies the large-scale attenuation on the microphone path of the audio device currently selected
AT^SNFA
with AT^SNFS. The write command is only available in audio modes 2 to 6.
Syntax
Test Command
AT^SNFA=?
Response(s)
^SNFA: (list of supported <atten>s)
OK
Read Command
AT^SNFA?
Response(s)
^SNFA: <atten>
OK
Write Command
AT^SNFA=<atten>
Response(s)
OK
ERROR
CME ERROR: <err>
Reference(s)
SIEMENS
Parameter Description
(num)(^SNFW)
<atten>
Multiplication factor for input samples. Parameter
Formula used to calculate microphone attenuation (negative gain):
Gain in dB = 20 * log(<atten>/32768)
(P)
0...32767 ...65535
0
32767
Notes
• This command is provided for compatibility with former products (e.g. M20) and is a subset of AT^SNFI. The
parameter
<inCalibrate>
• To make the changes persistent use AT^SNFW.
TC63_ATC_V00.490
Confidential / Draft - Do not copy
PIN
!
<atten>
Microphone is muted.
Please note that
AT^SNFA
any attempt to enter 0 will be rejected with error response. Value 0 is returned
only by the read command AT^SNFA? after the microphone was muted with
AT^SNFM=0 during an active call.
No attenuation on the microphone path
Values greater than 32767 will be suppressed to 32767.
of is identical with
AT^SNFI
Page 419 of 501
ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
% % % %
is identical with
<inCalibrate>
cannot be used to mute the microphone. Therefore,
of AT^SNFA.
<atten>
s
Last
% % ! % !
of AT^SNFI.
5/24/05