Audio Parameters Adjustable By At Commands; Table 32: Audio Parameters Adjustable By At Commands - Siemens TC65 Terminal Hardware Interface Description

TC65 Terminal Hardware Interface Description
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5.6.1

Audio Parameters Adjustable by AT Commands

Table 32: Audio Parameters Adjustable by AT Commands

Parameter Influence to
inBbcGain MICP/MICN analog amplifier gain
of baseband controller before ADC
inCalibrate digital attenuation of input signal
after ADC
outBbcGain EPP/EPN analog output gain of
baseband controller after DAC
outCalibrate[n] Digital attenuation of output signal
n = 0...4 after speech decoder, before
summation of sidetone and DAC
present for each volume step[n]
sideTone Digital attenuation of sidetone
is corrected internally by
outBbcGain to obtain a constant
sidetone independently to output
volume
Note: The parameters inCalibrate, outCalibrate and sideTone accept also values from
32768 to 65535, but these values are internally truncated to 32767.
TC65 Terminal_HD_V02.000b
Range Gain range
0...7 0...42dB
0...32767 -∞...0dB
0...3 0...-18dB
0...32767 -∞...+6dB
0...32767 -∞...0dB
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Calculation
6dB steps
20 * log
(inCalibrate/
32768)
6dB steps
20 * log (2 *
outCalibrate[n]/
32768)
20 * log
(sideTone/
32768)
19.02.2007