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  ITU-T A.5 justification information for referenced document ETSI TS 123 228 V14.6.0 (2018-01) in draft Q.3644
1. Clear description of the referenced document:
Name: ETSI TS 123 228 V14.6.0 (2018-01)
Title: Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228 version 14.6.0 Release 14)
2. Status of approval:
It is approved and published by ETSI.
3. Justification for the specific reference:
It is used as a reference in the Recommendation ITU-T Q.3644 (formerly Q.VoLTE-SAO-req).
4. Current information, if any, about IPR issues:
See: https://ipr.etsi.org/.
5. Other useful information describing the "Quality" of the document:
The status of the referred ETSI document is approved standard.
6. The degree of stability or maturity of the document:
The status of the referred ETSI document is published standard.
7. Relationship with other existing or emerging documents:
None
8. Any explicit references within that referenced document should also be listed:
[1] 3GPP TS 23.002: "Network Architecture"./
[2] CCITT Recommendation E.164: "Numbering plan for the ISDN era"./
[3] CCITT Recommendation Q.65: "Methodology – Stage 2 of the method for the characterisation of services supported by an ISDN"./
[4] ITU Recommendation I.130: "Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN"./
[5] 3GPP TS 33.310: "Network Domain Security (NDS); Authentication Framework (AF)"./
[6] Void./
[7] 3GPP TS 23.221: "Architectural Requirements"./
[8] 3GPP TS 22.228: "Service requirements for the IP multimedia core network subsystem"./
[9] 3GPP TS 23.207: "End-to-end QoS concept and architecture"./
[10] Void./
[10a] 3GPP TS 24.229: "IP Multimedia Call Control based on SIP and SDP; Stage 3"./
[11] 3GPP TS 29.214: "Policy and Charging Control over Rx reference point"./
[11a] 3GPP TS 29.207: "Policy control over Go interface"./
[12] IETF RFC 3261: "SIP: Session Initiation Protocol"./
[13] IETF RFC 3986: "Uniform Resource Identifiers (URI): Generic Syntax"./
[14] IETF RFC 4282: "The Network Access Identifier"./
[15] IETF RFC 3966: "The tel URI for Telephone Numbers"./
[16] IETF RFC 3761 (April 2004): "The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)"./
[16a] IETF RFC 4941: "Privacy Extensions for Stateless Address Autoconfiguration in IPv6"./
[17] ITU Recommendation G.711: "Pulse code modulation (PCM) of voice frequencies"./
[18] ITU Recommendation H.248: "Gateway control protocol"./
[19] 3GPP TS 33.203: "Access Security for IP-based services"./
[20] 3GPP TS 33.210: "Network Domain Security: IP network layer security"./
[21] Void./
[22] 3GPP TR 22.941: "IP Based Multimedia Services Framework"./
[23] 3GPP TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2"./
[24] 3GPP TS 23.003: "Technical Specification Group Core Network; Numbering, addressing and identification"./
[25] 3GPP TS 32.240: "Telecommunication management; Charging management; Charging architecture and principles"./
[26] 3GPP TS 32.260: "Telecommunication Management; Charging Management; IP Multimedia Subsystem (IMS) charging"./
[27] 3GPP TS 22.071: "Technical Specification Group Services and System Aspects, Location Services (LCS); Service description, Stage 1"./
[28] 3GPP TS 23.271: "Technical Specification Group Services and System Aspects, Functional stage 2 description of LCS"./
[29] 3GPP TS 23.078: "Customised Applications for Mobile network Enhanced Logic (CAMEL) Phase 3 - Stage 2"./
[29a] 3GPP TS 22.340: "IMS Messaging; Stage 1"./
[30] 3GPP TS 29.228: "IP Multimedia (IM) Subsystem Cx and Dx Interfaces; Signalling flows and message contents"./
[31] 3GPP TS 23.240: "3GPP Generic User Profile - Architecture; Stage 2"./
[32] 3GPP TS 22.250: "IP Multimedia Subsystem (IMS) group management"; Stage 1"./
[33] IETF RFC 2766: "Network Address Translation-Protocol Translation (NAT-PT)"./
[34] IETF RFC 2663: "IP Network Address Translator (NAT) Terminology and Considerations"./
[35] Void./
[36] 3GPP TS 23.141: "3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Presence Service"./
[37] Void./
[38] IETF RFC 3840: "Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)"./
[39] IETF RFC 3323: "A Privacy Mechanism for the Session Initiation Protocol (SIP)"./
[40] IETF RFC 3325: "Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Network"./
[41] IETF RFC 3312: "Integration of resource management and Session Initiation Protocol (SIP)"./
[42] IETF RFC 3841: "Caller Preferences for the Session Initiation Protocol (SIP)"./
[43] IETF RFC 3428: "Session Initiation Protocol (SIP) Extension for Instant Messaging"./
[44] IETF RFC 3263: "Session Initiation Protocol (SIP): Locating SIP Servers"./
[45] IETF RFC 5245: "Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer Protocols"./
[46] IETF RFC 5766: "Traversal Using Relays around NAT (TURN): Relay Extensions to Session Traversal Utilities for NAT (STUN)"./
[47] IETF RFC 5389: "Session Traversal Utilities for NAT (STUN)"./
[48] IETF RFC 5626: "Managing Client Initiated Connections in the Session Initiation Protocol (SIP)"./
[49] IETF RFC 5627: "Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP)"./
[50] IETF RFC 5628: "Registration Event Package Extension for Session Initiation Protocol (SIP) Globally Routable User Agent URIs (GRUUs)"./
[51] IETF RFC 4787: "Network Address Translation (NAT) Behavioural Requirements for Unicast UDP"./
[52] 3GPP TS 23.279: "Combining Circuit Switched (CS) and IP Multimedia Subsystem (IMS) services; Stage 2"./
[53] 3GPP TS 22.173: "IMS Multimedia Telephony Service and supplementary services; Stage 1"./
[54] 3GPP TS 23.203: "Policy and Charging Control architecture"./
[55] 3GPP TS 23.107: "Quality of Service (QoS) concept and architecture"./
[56] 3GPP TS 23.204: "Support of Short Message Service (SMS) over generic 3GPP Internet Protocol (IP) access"./
[57] IETF RFC 4769: "IANA Registration for an Enumservice Containing Public Switched Telephone Network (PSTN) Signaling Information"./
[58] 3GPP TS 23.167: "IP Multimedia Subsystem (IMS) emergency sessions"./
[59] 3GPP TS 29.333: "Multimedia Resource Function Controller (MRFC) - Multimedia Resource Function Processor (MRFP) Mp Interface; Stage 3"./
[60] 3GPP2 X.S0011: "cdma2000 Wireless IP Network Standard"./
[61] 3GPP2 C.S0001-D: "Introduction to cdma2000 Spread Spectrum Systems - Revision D"./
[62] 3GPP2 C.S0024-A: "cdma2000 High Rate Packet Data Air Interface Standard, April 2004"./
[63] 3GPP2 C.S0084-000: "Overview for Ultra Mobile Broadband (UMB) Air Interface Specification"./
[64] 3GPP TS 24.167: "3GPP IMS Management Object (MO); Stage 3"./
[65] IETF RFC 3022: "Traditional IP Network Address Translator (Traditional NAT)"./
[66] 3GPP TS 23.292: "IP Multimedia Subsystem (IMS) Centralized Services"./
[67] 3GPP TS 23.237: "IP Multimedia Subsystem (IMS) Service Continuity"./
[68] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications"./
[69] 3GPP TS 31.103: "Characteristics of the IP Multimedia Services Identity Module (ISIM) application"./
[70] 3GPP TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access"./
[71] 3GPP TS 23.218: "IP Multimedia (IM) session handling; IM call model; Stage 2"./
[72] IETF RFC 3264: "An Offer/Answer Model with Session Description Protocol"./
[73] 3GPP TS 23.333: "Multimedia Resource Function Controller (MRFC) - Multimedia Resource Function Processor (MRFP) Mp interface: Procedures Descriptions"./
[74] 3GPP TS 23.334: " IMS Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMSAGW) interface: Procedures Descriptions"./
[75] 3GPP TS 29.162: "Interworking between the IM CN subsystem and IP networks"./
[76] 3GPP TS 26.114: "IP Multimedia Subsystem (IMS); Multimedia Telephony; Media handling and interaction"./
[77] 3GPP TS 22.153: "Multimedia priority service"./
[78] ETSI ES 282 003: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Resource and Admission Control Sub-System (RACS): Functional Architecture"./
[79] 3GPP TS 29.328: "IP Multimedia (IM) Subsystem Sh Interface; Signalling flows and message contents"./
[80] 3GPP TS 23.380: "IP Multimedia Subsystem (IMS); IMS Restoration Procedures"./
[81] 3GPP TS 24.525: "Business trunking; Architecture and functional description"./
[82] 3GPP TS 23.402: "Architecture Enhancements for non-3GPP accesses"./
[83] 3GPP TS 33.328: "IP Multimedia (IM) Subsystem media plane security"./
[84] IETF Draft, draft-ietf-rtcweb-overview-13 "Overview: Real Time Protocols for Brower-based Applications"./
[85] W3C: "WebRTC 1.0: Real-time Communication Between Browsers", W3C Working Draft, 10 September 2013, http://www.w3.org/TR/2013/WD-webrtc-20130910/./
[86] W3C: "Cross-Origin Resource Sharing", W3C Proposed Recommendation, 05 December 2013, http://www.w3.org/TR/2013/PR-cors-20131205/./
[87] ITU-T Recommendation T.140: "Protocol for multimedia application text conversation"./
[88] IETF RFC 6455: "The WebSocket Protocol"./
[89] IETF RFC 7118: "The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)"./
[90] IETF RFC 4571: "Framing Real-time Transport Protocol (RTP) and RTP Control Protocol (RTCP) Packets over Connection-Oriented Transport"./
[91] 3GPP TS 24.610: "Communication HOLD (HOLD) using IP Multimedia (IM) Core Network (CN) subsystem"./
[92] 3GPP TS 23.179: "Functional architecture and information flows to support mission critical communication services; Stage 2".
9. Qualification of ETSI:
ETSI is recognized under the provisions of ITU-T Recommendations A.5 and A.6. Qualifying information is on file at TSB.
10. Other (for any supplementary information):
None
Note: This form is based on Recommendation ITU-T A.5