| CN | CN1 | CN2 | CN3 | CN4 | CN5 |
| CT | CT1 | CT3 | CT4 | CT5 | CT6 |
| GERAN | GERAN1 | GERAN2 | GERAN3 | GERAN4 | GERAN5 |
| RAN | RAN1 | RAN2 | RAN3 | RAN4 | RAN5 |
| SA | SA1 | SA2 | SA3 | SA4 | SA5 |
| T | T1 | T2 | T3 |

TSG SA WG1 (Services)

Overview:

TSG SA WG1 Services works on the services and features for 3G. The group sets high level requirements for the overall system and provides this in a Stage 1 description in the form of specifications and reports. This work includes: Definition of service and feature requirements, Framework for services, Specification of services (stage 1), Specification of service capabilities (stage 1), Identification of technical and operational issues to meet market requirements and Charging and accounting requirements.