Foreword

04.873GPPStage 3TSUser-to-User Signalling (UUS) supplementary service

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

The present document gives the stage 3 description of the User-to-User signalling supplementary services within the digital cellular telecommunications system.

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

Version 7.x.y

where:

7 GSM Phase 2+ Release 1998;

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:

3 December 1999

Date of latest announcement of this EN (doa):

31 March 2000

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

30 September 2000

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

30 September 2000