SSH ETS 300 963:1997 ed.1

Digital cellular telecommunications system; Full rate speech; Comfort noise aspect for full rate speech traffic channels (GSM 06.12 version 5.0.1)

Scope

This European Telecommunication Standard (ETS) gives the detailed requirements for the correct operation of the background acoustic noise evaluation, noise parameter encoding/decoding and comfort noise generation in GSM Mobile Stations (MS)s and Base Station Systems (BSS)s during Discontinuous Transmission (DTX) on full rate speech traffic channels. The requirements described in this ETS are mandatory for implementation in all GSM MSs. The receiver requirements are mandatory for implementation in all GSM BSSs, the transmitter requirements only for those where downlink DTX will be used.