Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Technical Specifications and Technical Reports relating to the Common IP Multimedia Subsystem (IMS) (V9.0.0; 3GPP TS 21.202 version 9.0.0 Releas
The present document identifies the 3GPP Technical Specifications and Technical Reports specifically relating to the IP Multimedia Subsystem (IMS). and which are common to all systems based on IMS.