Table of Contents

1 Scope
2 References
3 Abbreviations
4 Cross phase compatibility
5 Network initiated unstructured supplementary
  service
  5.1 Handling of network initiated USSD
  5.2 Functions and information flows
  5.3 Information stored in the HLR
  5.4 Information stored in the VLR
  5.5 Handover
  5.6 Cross-phase compatibility
6 Mobile initiated unstructured supplementary
  service data
  6.1 Handling of mobile initiated USSD
  6.2 Functions and information flows
  6.3 Information stored in the HLR
  6.4 Information stored in the VLR
  6.5 Handover
  6.6 Cross-phase compatibility
Annex A (informative): Change Request History
History

Abstract

Gives the stage 2 description of Unstructured Supplementary Service Data (USSD). The unstructured supplementary service data (USSD) mechanism allows the Mobile Station (MS) user and a PLMN operator defined application to communicate in a way which is transparent to the MS and to intermediate network entities. The mechanism allows development of PLMN specific supplementary services.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SMG 3