3 Definitions and abbreviations

06.023GPPHalf rate speech processing functionsTS

3.1 Definitions

Definition of terms used in the present document can be found in GSM 06.20 [4], GSM 06.21 [5], GSM 06.22 [6], GSM 06.41 [7] and GSM 06.42 [8].

3.2 Abbreviations

For the purposes of the present document, the following abbreviations apply.

BFI Bad Frame Indication

BSS Base Station System

DTX Discontinuous Transmission

GSM Global System for Mobile communications

MS Mobile Station

PCM Pulse Code Modulated

PLMN Public Land Mobile Network

PSTN Public Switched Telephone Network

RF Radio Frequency

RX Receive

RSS Radio SubSystem

SACCH Slow Associated Control CHannel

SID SIlence Descriptor

SP flag SPeech flag

TAF Time Alignment Flag

TX Transmit

VSELP Vector Sum Excited Linear Predictor

UFI Unreliable Frame Indication

For abbreviations not given in this subclause, see GSM 01.04 [1].