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SA1 - Services

Terms of reference

The latest terms of reference were approved at SA#50 in document SP-100835.

SA WG1 reports to 3GPP TSG SA.


  • Specification of features (stage1) .
  • Specification of services (stage 1).
  • Specification of service capabilities (stage 1).
  • Identification of requirements to support service operation.
  • Identification of requirements for service interworking.
  • Identification of requirements for service interoperability between networks.
  • Charging and accounting requirements


Service and feature requirements applicable to mobile and fixed communications technology for:

  • 2G, 3G and future communication technologies independent of access technologies based on an evolved GSM/GPRS core network , including the Evolved 3GPP Core Network,
  • 2G, 3G and future communication access technologies (including GERAN, UTRAN and E-UTRAN),
  • an evolved industry-wide IP Multimedia Subsystem (IMS) developed in an access independent manner.
  • converged fixed-mobile communication technologies, when the involved mobile technologies are those identified above.


The outputs of this working group will be Technical Specifications and Reports, or changes to these, which are all submitted to TSG SA for approval. Once approved, they shall form the basis for the work for the whole of 3GPP and for industry segments interested in deploying networks based on IMS.

Useful links and information

About SA WG1 List of elected officials
Documents Meeting documents
  Work items
Meetings Next SA WG1 meeting information
  Future meeting information & previous meeting reports and documents
  Liaisons Statements
  Full SA WG1 meeting calendar
General info Email exploder lists
SA Working groups and Ad Hoc groups 
TSG SA Plenary  
TSG SA WG1 Services
TSG SA WG2 Architecture
TSG SA WG3 Security
TSG SA WG4 Codec
TSG SA WG5 Telecom Management
TSG SA WG6 Mission-critical applications


SA1 delegates survival guide

How to contribute documents to meetings

The success of 3GPP Working Groups is driven by documents contributed by member companies. An idea is transformed in to a Technical Specification or a Technical Report as a result of a work flow that starts by contributions, in the form of documents. The process of submitting documents, and handling them, is very important to the success of the group. The 3GPP SA1 Guidelines for Delegates (...)
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