3 Definitions and abbreviations

06.613GPPSubstitution and muting of lost frames for encanced full rate speech traffic channelsTS

3.1 Definitions

For the purposes of the present document, the following term and definition applies:

5-point median operation: consists of sorting the 5 elements belonging to the set for which the median operation is to be performed in an ascending order according to their values, and selecting the third largest value of the sorted set as the median value.

Further definitions of terms used in the present document can be found in GSM 06.60 [2], GSM 06.81 [3], GSM 05.03 [1] and GSM 08.60 [4].

3.2 Abbreviations

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

BFI Bad Frame Indication from Radio Sub System

BSI_Abis Bad Sub-block Indication obtained from A-bis CRC checks

CCU Channel Coding Unit

CRC Cyclic Redundancy Check

DTX Discontinuous transmission

median5 5-point median operation

PrevBFI Bad Frame Indication of Previous frame

RSS Radio Sub System

RX Receive

SID SIlence Descriptor frame

TRAU Transcoding Rate Adaptation Unit