06.933GPPDiscontinuous Transmission (DTX) for Adaptive Multi-Rate speech traffic channelsTS

This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Special Mobile Group (SMG).

The present document describes the general baseband operation of Adaptive Multi-Rate speech traffic channels in the transmitter and in the receiver of GSM Mobile Stations and Base Station Systems during Discontinuous Transmission (DTX) within the digital cellular telecommunications system.

The present document corresponds to GSM technical specification, GSMĀ 06.93 AMR, version X.X.X

The contents of the present document is subject to continuing work within SMG and may change following formal SMG approval. Should SMG modify the contents of the present document it will be re-released with an identifying change of release date and an increase in version number as follows:

Version 7.x.y


7 indicates Release 1998 of GSM Phase 2+

x the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc.

y the third digit is incremented when editorial only changes have been incorporated in the specification.

National transposition dates

Date of adoption of this EN:

9 March 2001

Date of latest announcement of this EN (doa):

30 June 2001

Date of latest publication of new National Standard
or endorsement of this EN (dop/e):

31 December 2001

Date of withdrawal of any conflicting National Standard (dow):

31 December 2001