Siemens TC35i User Manual download pdf (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.

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Siemens TC35i User Manual Page 24