Specifications

AT Command Set
TC3X_ATC_01_V04.00 Page 165 of 204 29.05.2002
6.24 AT^SNFO Set audio output (= loudspeaker path) parameter
Test command
AT^SNFO=?
Response
^SNFO: (list of supported <outBbc Gain>), (list of supported
<outCalibrate[0...4] >), (list of supported <outStep>), (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=<out-
BbcGain>,<out-
Calibrate[0]>,...<out
Calibrate[4]>,<out-
Step>,<sideTone>
Set TA’s loudspeaker path parameters.
Response
<outBbcGain> <outCalibrate[0]>...<outCalibrate[4]> <(outStep)> <sideTone>
OK
Parameters
<outBbcGain> Setting of DAC gain amplifier attenuation 0 – 3 (0=0 dB,
3=-18 dB, 4 steps of 6 dB)
<outCalibrate[0]> ... <outCalibrate[4]>
Multiplication factor 0 – 32767 for output samples
Attenuation = 20 * log (outCalibrate[n]/32767)
<outStep> Setting of actual volume; 0 – 4, i.e. outCalibrate[n]
<sideTone> Multiplication factor 0 – 32767 determining how much of
the original microphone signal is added to the earpiece
signal.
Side Tone Gain/dB = 20 * log (sideTone/32767)
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.
· The range of <outCalibrate> is up to 65535, but will be suppressed to
32767. A value above <outCalibrate> = 65535 will cause an error.
· <outStep> can also be selected with AT^SNFV (see Chapter 6.27 and
AT+CLVL (see Chapter 4.21).
· Any change to <outStep> takes effect in audio modes 2 to 6. That is, when
you change <outStep> and then select another mode with AT^SNFS, the
same value will be applied. The only exception is audio mode 1 which is
fixed to <outStep>=4.
· The value of <outStep> is stored non-volatile when the ME is powered
down with AT^SMSO or reset with AT+CFUN=1,1. Any other values
changed with AT^SNFO need to be saved with AT^SNFW for use after
restart.
· CAUTION! When you adjust audio parameters avoid exceeding the
maximum allowed level. Bear in mind that exposure to excessive levels of
noise can cause physical damage to users!