Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Sh interface based on the Diameter protocol; Protocol details (V8.8.0; 3GPP TS 29.329 version 8.8.0 Release 8)
The present document defines a transport protocol for use in the IP multimedia (IM) Core Network (CN) subsystem based on Diameter. The present document is applicable to: - The Sh interface between an AS and the HSS. - The Sh interface between an SCS and the HSS. Whenever it is possible this document specifies the requirements for this protocol by reference to specifications produced by the IETF within the scope of Diameter. Where this is not possible@ extensions to Diameter are defined within this document.