| RTS/TSGS-0223207v660 (TS 123 207) | Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); End-to-end Quality of Service (QoS) concept and architecture; (3GPP TS 23.207 version 6.6.0 Release 6) | 6.6.0 | 5.1, 5.2 | 
                                            
                                                
                                                    | RTS/TSGS-0223228v6g0 (TS 123 228) | Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); IP Multimedia Subsystem (IMS); Stage 2; (3GPP TS 23.228 version 6.16.0 Release 6) | 6.16.0 | 4, 4.0, 5.4, Annex E, E.0, E.1, E.2 |