Siemens TC35i - Manual (Page 24)

TC35i Terminal Hardware Interface Description
Confidential / Released
TC35i_T_HD_v01.05 Page 24/37 10.07.2003
baseband controller to calculate e.g. amplifications, sidetone, echo cancellation or noise
suppression.
Full rate, half rate and enhanced full rate, speech and channel encoding including voice
activity detection (VAD) and discontinuous transmission (DTX) and digital GMSK modulation
are also performed on the GSM baseband processor.
Note: With regard to acoustic shock, the cellular application must be designed to avoid
sending false AT commands that might increase the amplification, e.g. for a high
sensitive earpiece.