| Number | Title | 
                                
                                    
                                        | 22.228 | Service requirements for the Internet Protocol (IP) multimedia core network subsystem (IMS); Stage 1 | 
                                
                                    
                                        | 22.340 | IP Multimedia Subsystem (IMS) messaging; Stage 1 | 
                                
                                    
                                        | 24.623 | Extensible Markup Language (XML) Configuration Access Protocol (XCAP) over the Ut interface for Manipulating Supplementary Services | 
                                
                                    
                                        | 24.628 | Common Basic Communication procedures using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification | 
                                
                                    
                                        | 24.930 | Signalling flows for the session setup in the IP Multimedia core network Subsystem (IMS) based on Session Initiation Protocol (SIP)  and Session Description Protocol (SDP); Stage 3 | 
                                
                                    
                                        | 21.905 | Vocabulary for 3GPP Specifications | 
                                
                                    
                                        | 22.066 | Support of Mobile Number Portability (MNP); Service description; Stage 1 | 
                                
                                    
                                        | 22.101 | Service aspects; Service principles | 
                                
                                    
                                        | 22.105 | Services and service capabilities | 
                                
                                    
                                        | 22.115 | Service aspects; Charging and billing | 
                                
                                    
                                        | 22.121 | Service aspects; The Virtual Home Environment (VHE); Stage 1 | 
                                
                                    
                                        | 22.129 | Service aspects; Handover requirements between UTRAN and GERAN or other radio systems | 
                                
                                    
                                        | 22.173 | IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1 | 
                                
                                    
                                        | 23.002 | Network architecture | 
                                
                                    
                                        | 23.003 | Numbering, addressing and identification | 
                                
                                    
                                        | 23.008 | Organization of subscriber data | 
                                
                                    
                                        | 23.060 | General Packet Radio Service (GPRS); Service description; Stage 2 | 
                                
                                    
                                        | 23.107 | Quality of Service (QoS) concept and architecture | 
                                
                                    
                                        | 23.121 | Architectural requirements for Release 1999 | 
                                
                                    
                                        | 23.141 | Presence service; Architecture and functional description | 
                                
                                    
                                        | 23.167 | IP Multimedia Subsystem (IMS) emergency sessions | 
                                
                                    
                                        | 23.203 | Policy and charging control architecture | 
                                
                                    
                                        | 23.207 | End-to-end Quality of Service (QoS) concept and architecture | 
                                
                                    
                                        | 23.216 | Single Radio Voice Call Continuity (SRVCC); Stage 2 | 
                                
                                    
                                        | 23.218 | IP Multimedia (IM) session handling; IM call model; Stage 2 | 
                                
                                    
                                        | 23.221 | Architectural requirements | 
                                
                                    
                                        | 23.226 | Global text telephony (GTT); Stage 2 | 
                                
                                    
                                        | 23.228 | IP Multimedia Subsystem (IMS); Stage 2 | 
                                
                                    
                                        | 23.237 | IP Multimedia Subsystem (IMS) Service Continuity; Stage 2 | 
                                
                                    
                                        | 23.278 | Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; Stage 2; IM CN Interworking | 
                                
                                    
                                        | 23.292 | IP Multimedia Subsystem (IMS) centralized services; Stage 2 | 
                                
                                    
                                        | 23.380 | IMS Restoration Procedures | 
                                
                                    
                                        | 23.402 | Architecture enhancements for non-3GPP accesses | 
                                
                                    
                                        | 23.406 | TISPAN; IP Multimedia Subsystem (IMS); Stage 2 description [3GPP TS 23.228 v7.2.0, modified] | 
                                
                                    
                                        | 23.506 | TISPAN; IP Multimedia Subsystem (IMS); Stage 2 description [3GPP TS 23.228 Release 7, modified] | 
                                
                                    
                                        | 23.509 | TISPAN; NGN Architecture to support emergency communication from citizen to authority [Endorsed document 3GPP TS 23.167, Release 7] | 
                                
                                    
                                        | 23.820 | Study of IMS restoration procedures | 
                                
                                    
                                        | 23.981 | Interworking aspects and migration scenarios for IPv4-based IP Multimedia Subsystem (IMS) implementations | 
                                
                                    
                                        | 24.008 | Mobile radio interface Layer 3 specification; Core network protocols; Stage 3 | 
                                
                                    
                                        | 24.141 | Presence service using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3 | 
                                
                                    
                                        | 24.147 | Conferencing using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3 | 
                                
                                    
                                        | 24.167 | 3GPP IMS Management Object (MO); Stage 3 | 
                                
                                    
                                        | 24.206 | Voice call continuity between Circuit Switched (CS) and IP Multimedia Subsystem (IMS); Stage 3 | 
                                
                                    
                                        | 24.216 | Communication Continuity Management Object (MO) | 
                                
                                    
                                        | 24.228 | Signalling flows for the IP multimedia call control based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 | 
                                
                                    
                                        | 24.229 | IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 | 
                                
                                    
                                        | 24.237 | IP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) service continuity; Stage 3 | 
                                
                                    
                                        | 24.247 | Messaging service using the IP Multimedia (IM) Core Network (CN) subsystem; Stage 3 | 
                                
                                    
                                        | 24.279 | Combining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 3 | 
                                
                                    
                                        | 24.292 | IP Multimedia (IM) Core Network (CN) subsystem Centralized Services (ICS); Stage 3 | 
                                
                                    
                                        | 24.301 | Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3 | 
                                
                                    
                                        | 24.403 | TISPAN; IP Multimedia Call Control Protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Stage 3 [3GPP TS 24.229 (Release 7), modified] | 
                                
                                    
                                        | 24.430 | TISPAN; Presence Service Capability; Protocol Specification [3GPP TS 24.141 V7.0.0, modified and OMA-TS-Presence_SIMPLE-V1_0, modified] | 
                                
                                    
                                        | 24.503 | TISPAN; IP Multimedia Call Control Protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP) Stage 3 [3GPP TS 24.229 (Release 7), modified] | 
                                
                                    
                                        | 24.604 | Communication Diversion (CDIV) using IP Multimedia (IM) Core Network (CN) subsystem;  Protocol specification | 
                                
                                    
                                        | 24.611 | Anonymous Communication Rejection (ACR) and Communication Barring (CB) using IP Multimedia (IM)  Core Network (CN) subsystem; Protocol specification | 
                                
                                    
                                        | 24.615 | Communication Waiting (CW) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol Specification | 
                                
                                    
                                        | 25.322 | Radio Link Control (RLC)  protocol specification | 
                                
                                    
                                        | 25.453 | UTRAN Iupc interface Positioning Calculation Application Part (PCAP) signalling | 
                                
                                    
                                        | 26.103 | Speech codec list for GSM and UMTS | 
                                
                                    
                                        | 26.140 | Multimedia Messaging Service (MMS); Media formats and codecs | 
                                
                                    
                                        | 26.142 | Dynamic and Interactive Multimedia Scenes (DIMS) | 
                                
                                    
                                        | 26.233 | Transparent end-to-end Packet-switched Streaming service (PSS); General description | 
                                
                                    
                                        | 26.234 | Transparent end-to-end Packet-switched Streaming Service (PSS); Protocols and codecs | 
                                
                                    
                                        | 26.235 | Packet switched conversational multimedia applications; Default codecs | 
                                
                                    
                                        | 26.236 | Packet switched conversational multimedia applications; Transport protocols | 
                                
                                    
                                        | 26.237 | IP Multimedia Subsystem (IMS) based Packet Switch Streaming (PSS) and Multimedia Broadcast/Multicast Service (MBMS) User Service; Protocols | 
                                
                                    
                                        | 26.244 | Transparent end-to-end packet switched streaming service (PSS); 3GPP file format (3GP) | 
                                
                                    
                                        | 26.346 | Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs | 
                                
                                    
                                        | 26.935 | Packet Switched (PS) conversational multimedia applications; Performance characterisation of default codecs | 
                                
                                    
                                        | 27.007 | AT command set for User Equipment (UE) | 
                                
                                    
                                        | 27.060 | Packet domain;  Mobile Station (MS) supporting Packet Switched services | 
                                
                                    
                                        | 29.002 | Mobile Application Part (MAP) specification | 
                                
                                    
                                        | 29.060 | General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface | 
                                
                                    
                                        | 29.061 | Interworking between the Public Land Mobile Network (PLMN) supporting packet based services and Packet Data Networks (PDN) | 
                                
                                    
                                        | 29.078 | Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase X; CAMEL Application Part (CAP) specification | 
                                
                                    
                                        | 29.162 | Interworking between the IM CN subsystem and IP networks | 
                                
                                    
                                        | 29.163 | Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks | 
                                
                                    
                                        | 29.165 | Inter-IMS Network to Network Interface (NNI) | 
                                
                                    
                                        | 36.508 | Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC); Common test environments for User Equipment (UE) conformance testing | 
                                
                                    
                                        | 36.523-1 | Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC); User Equipment (UE) conformance specification; Part 1: Protocol conformance specification | 
                                
                                    
                                        | 36.523-2 | Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC); User Equipment (UE) conformance specification; Part 2: Implementation Conformance Statement (ICS) proforma specification | 
                                
                                    
                                        | 29.207 | Policy control over Go interface | 
                                
                                    
                                        | 29.208 | End-to-end Quality of Service (QoS) signalling flows | 
                                
                                    
                                        | 29.212 | Policy and Charging Control (PCC); Reference points | 
                                
                                    
                                        | 29.213 | Policy and charging control signalling flows and Quality of Service (QoS) parameter mapping | 
                                
                                    
                                        | 29.214 | Policy and charging control over Rx reference point | 
                                
                                    
                                        | 29.215 | Policy and Charging Control (PCC) over S9 reference point; Stage 3 | 
                                
                                    
                                        | 29.228 | IP Multimedia (IM) Subsystem Cx and Dx Interfaces; Signalling flows and message contents | 
                                
                                    
                                        | 29.229 | Cx and Dx interfaces based on the Diameter protocol; Protocol details | 
                                
                                    
                                        | 29.230 | Diameter applications; 3GPP specific codes and identifiers | 
                                
                                    
                                        | 29.235 | Interworking between SIP-I based circuit-switched core network and other networks | 
                                
                                    
                                        | 29.272 | Evolved Packet System (EPS); Mobility Management Entity (MME) and Serving GPRS Support Node (SGSN) related interfaces based on Diameter protocol | 
                                
                                    
                                        | 29.273 | Evolved Packet System (EPS); 3GPP EPS AAA interfaces | 
                                
                                    
                                        | 29.274 | 3GPP Evolved Packet System (EPS); Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3 | 
                                
                                    
                                        | 29.275 | Proxy Mobile IPv6 (PMIPv6) based Mobility and Tunnelling protocols; Stage 3 | 
                                
                                    
                                        | 29.276 | 3GPP Evolved Packet System (EPS); Optimized handover procedures and protocols between E-UTRAN access and cdma2000 HRPD Access; Stage 3 | 
                                
                                    
                                        | 29.278 | Customized Applications for Mobile network Enhanced Logic (CAMEL) Phase 4; CAMEL Application Part (CAP) specification for IP Multimedia Subsystems (IMS) | 
                                
                                    
                                        | 29.280 | Evolved Packet System (EPS); 3GPP Sv interface (MME to MSC, and SGSN to MSC) for SRVCC | 
                                
                                    
                                        | 29.328 | IP Multimedia (IM) Subsystem Sh interface; Signalling flows and message contents | 
                                
                                    
                                        | 29.329 | Sh interface based on the Diameter protocol; Protocol details | 
                                
                                    
                                        | 29.332 | Media Gateway Control Function (MGCF) - IM Media Gateway; Mn interface | 
                                
                                    
                                        | 29.333 | Multimedia Resource Function Controller (MRFC) - Multimedia Resource Function Processor (MRFP) Mp interface; Stage 3 | 
                                
                                    
                                        | 29.364 | IP Multimedia Subsystem (IMS) Application Server (AS) service data descriptions for AS interoperability | 
                                
                                    
                                        | 29.863 | Feasibility Study for the multimedia inter-working between the IP Multimedia Core Network (CN) Subsystem (IMS) and Circuit Switched (CS) networks | 
                                
                                    
                                        | 31.102 | Characteristics of the Universal Subscriber Identity Module (USIM) application | 
                                
                                    
                                        | 31.103 | Characteristics of the IP Multimedia Services Identity Module (ISIM) application | 
                                
                                    
                                        | 31.111 | Universal Subscriber Identity Module (USIM) Application Toolkit (USAT) | 
                                
                                    
                                        | 32.200 | Telecommunication management; Charging management; Charging principles | 
                                
                                    
                                        | 32.225 | Telecommunication management; Charging management; Charging data description for the IP Multimedia Subsystem (IMS) | 
                                
                                    
                                        | 32.240 | Telecommunication management; Charging management; Charging architecture and principles | 
                                
                                    
                                        | 32.251 | Telecommunication management;Charging management;Packet Switched (PS) domain charging | 
                                
                                    
                                        | 32.260 | Telecommunication management;Charging management;IP Multimedia Subsystem (IMS) charging | 
                                
                                    
                                        | 32.296 | Telecommunication management; Charging management; Online Charging System (OCS): Applications and interfaces | 
                                
                                    
                                        | 32.298 | Telecommunication management; Charging management; Charging Data Record (CDR) parameter description | 
                                
                                    
                                        | 32.299 | Telecommunication management; Charging management; Diameter charging applications | 
                                
                                    
                                        | 32.409 | Telecommunication management; Performance Management (PM); Performance measurements; IP Multimedia Subsystem (IMS) | 
                                
                                    
                                        | 33.141 | Presence service; Security | 
                                
                                    
                                        | 33.203 | 3G security; Access security for IP-based services | 
                                
                                    
                                        | 33.210 | Network Domain Security (NDS); IP network layer security | 
                                
                                    
                                        | 33.401 | 3GPP System Architecture Evolution (SAE); Security architecture | 
                                
                                    
                                        | 33.402 | 3GPP System Architecture Evolution (SAE); Security aspects of non-3GPP accesses | 
                                
                                    
                                        | 33.821 | Rationale and track of security decisions in Long Term Evolution (LTE) RAN / 3GPP System Architecture Evolution (SAE) | 
                                
                                    
                                        | 33.978 | Security aspects of early IP Multimedia Subsystem (IMS) | 
                                
                                    
                                        | 34.108 | Common test environments for User Equipment (UE); Conformance testing | 
                                
                                    
                                        | 34.229-1 | Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); User Equipment (UE) conformance specification; Part 1: Protocol conformance specification | 
                                
                                    
                                        | 34.229-2 | Internet Protocol (IP) multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); User Equipment (UE) conformance specification; Part 2: Implementation Conformance Statement (ICS) specification | 
                                
                                    
                                        | 36.300 | Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 | 
                                
                                    
                                        | 36.304 | Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode | 
                                
                                    
                                        | 36.331 | Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification | 
                                
                                    
                                        | 36.413 | Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP) | 
                                
                                    
                                        | 36.423 | Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 Application Protocol (X2AP) | 
                                
                                    
                                        | 24.337 | IP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) inter-UE transfer; Stage 3 |