Category: 3GPP
3GPP SPEC top category
- 16 Messaging service
- 14 Interoperability of IMS Service Continuity over II-NNI
- 15 Presence service
- 10 Security
- 11 Charging
- 12 Supplementary services associated with the IMS multimedia telephony communication service
- 13 Interoperability of IMS Centralized Services (ICS) over II-NNI
- 6 Control plane interconnection
- 7 User plane Interconnection
- 8 Numbering, Naming and Addressing