Specifications

TC35i AT Command Set
Confidential / Released
TC35i_ATC_V01.05 Page 218 of 278 04.08.2003
7.29 AT^SNFO Set audio output (= loudspeaker path) parameter
Test command
AT^SNFO=?
Response
^SNFO: (list of supported <outBbcGain>s) (list of supported <outCali-
brate>s) (list of supported <outStep>s) (list of supported <sideTone>s)
OK
Parameter
See write command
Read command
AT^SNFO?
Response
^SNFO: <outBbcGain>, <outCalibrate[0]>,...<outCalibrate[4]>, <outStep>,
<sideTone>
OK
Parameter
See write command
Write command
AT^SNFO=
<outBbcGain>,
<outCalibrate[0]>,
...<outCalibrate[4]>,
<outStep>,<sideTone>
Set TA's loudspeaker path parameters.
Response
OK
Parameters
<outBbcGain> Negative DAC gain (attenuation) adjustable in four 6 dB
steps from 0 dB to -18 dB:
0 – 3 (where 0 = 0 dB and 3 = -18 dB)
<outCalibrate[0]> ... <outCalibrate[4]>
Multiplication factor for output samples:
0 - 32767
Formula to calculate the value of the 5 volume steps
selectable with parameter <outstep>:
Gain in dB = 20 * log (2 * outCalibrate[n] / 32768).
<outStep> Volume steps 0 – 4, each defined with
<outCalibrate[n]>
<sideTone> Multiplication factor for the sidetone gain:
0 to 32767
Formula to calculate how much of the original
microphone signal is added to the earpiece signal:
Sidetone gain in dB = 20 * log (sideTone / 32768).
Reference
Siemens
Note
· The read and write commands refer to the active audio mode.
· The write command works only in audio modes 2 to 6.
· <outCalibrate> specifies the amount of volume of each <outStep>. The
range of <outCalibrate> is up to 65535, but will be suppressed to
32767. A value above <outCalibrate> = 65535 will cause an error.
· The range of <sideTone> is up to 65535, but will be suppressed to
32767. A value above <sideTone> = 65535 will cause an error.
·
A
n
y
chan
g
e to <outSte
p
> takes effect in audio modes 2 to 6. That is,