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SIP Standards

Core SIP Documents
RFC Document Title
RFC 2543 SIP: Session Initiation Protocol (obsolete)
RFC 3261 SIP: Session Initiation Protocol
RFC 3262 Reliability of Provisional Responses
RFC 3263 Locating SIP Servers
RFC 3265 SIP-Specific Event Notification
RFC 5954 Essential Correction for IPv6 ABNF and URI Comparison in RFC 3261

SDP-Related Documents
RFC Document Title
RFC 2327 Session Description Protocol (SDP) (obsolete: see RFC 4566)
RFC 3264 An Offer/Answer Model with the Session Description Protocol (SDP)
RFC 3266 Support of IPv6 in SDP
RFC 3388 Grouping Media Lines in SDP (obsolete: see RFC 5888)
RFC 3407 Session Description Protocol (SDP) Simple Capability Declaration
RFC 3524 Mapping of Media Streams to Resource Reservation Flows
RFC 3556 SDP Bandwidth Modifiers for RTCP Bandwidth
RFC 3605 Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP)
RFC 3890 A Transport Independent Bandwidth Modifier
RFC 4091 An Alternative NAT Semantics for SDP
RFC 4145 TCP-Based Media Transport in the SDP
RFC 4566 Session Description Protocol (SDP)
RFC 4567 Key Management Extensions for SDP and RTSP
RFC 4568 SDP Security Descriptions for Media Streams
RFC 4570 SDP Source Filters
RFC 4572 Connection-Oriented Media Transport over TLS in SDP
RFC 4574 SDP Label Attribute
RFC 4756 FEC Grouping Semantics in SDP
RFC 4796 The SDP Content Attribute
RFC 5027 Security Preconditions for SDP
RFC 5432 QoS Mechanism Selection in SDP
RFC 5547 SDP Offer/Answer Mechanism to Enable File Transfer
RFC 5576 Source-Specific Media Attributes in SDP
RFC 5583 Signaling Media Decoding Dependency in SDP
RFC 5888 The SDP Grouping Framework
RFC 5898 Connectivity Preconditions for SDP Media Streams
RFC 5939 SDP Capability Negotiation
RFC 6064 SDP and RTSP Extensions Defined for 3GPP Packet-Switched Streaming Service and Multimedia Broadcast/Multicast Service (informational)
RFC 6193 Media Description for IKE in SDP
RFC 6164 Media Description for the Internet Key Exchange Protocol (IKE) in SDP (informational)
RFC 6236 Negotiation of Generic Image Attributes in the SDP
RFC 6364 SDP Elements for the Forward Error Correction (FEC) Framework
RFC 6849 An Extension to the Session Description Protocol (SDP) and Real-time Transport Protocol (RTP) for Media Loopback
RFC 6871 Session Description Protocol (SDP) Media Capabilities Negotiation
RFC 6847 The Session Description Protocol (SDP) Alternate Connectivity (ALTC) Attribute
RFC 7104 Duplication Grouping Semantics in the Session Description Protocol
RFC 7195 SDP Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the PSTN
RFC 7197 Duplication Delay Attribute in the Session Description Protocol
RFC 7261 Offer/Answer Considerations for G723 Annex A and G729 Annex B
RFC 8035 (SDP Offer/Answer Clarifications for RTP/RTCP Multiplexing
RFC 8124 SDP WebSocket Connection URI Attribute

RTP-Related Documents
RFC Document Title
RFC 1889 RTP: Transport Protocol for Real-Time Applications (obsolete: see RFC 3550)
RFC 1890 RTP Profile for Audio and Video Conferences with Minimal Control (obsolete: see RFC 3551)
RFC 2198 RTP Payload for Redundant Audio Data
RFC 2733 An RTP Payload Format for Generic Forward Error Correction (obsolete: see RFC 5109)
RFC 2793 RTP Payload for Text Conversation (obsolete: see RFC 4103)
RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals (obsolete: see RFC 4733)
RFC 2959 Real-Time Transport Protocol Management Information Base
RFC 3389 RTP Payload for Comfort Noise
RFC 3550 RTP: Transport Protocol for Real-Time Applications
RFC 3551 RTP Profile for Audio and Video Conferences with Minimal Control
RFC 3611 RTP Control Protocol Extended Reports (RTCP XR)
RFC 3711 The Secure Real-time Transport Protocol (SRTP)
RFC 3952 RTP Payload Format for internet Low Bit Rate Codec (iLBC) Speech
RFC 4103 RTP Payload for Text Conversation
RFC 4571 Framing RTP and RTCP Packets over Connection-Oriented Transport
RFC 4585 Extended RTP Profile for RTCP-Based Feedback (RTP/AVPF)
RFC 4586 RTP/AVPF: Results of the Timing Rule Simulations
RFC 4588 RTP Retransmission Payload Format
RFC 4629 RTP Payload Format for ITU-T Rec. H.263 Video
RFC 4771 Integrity Transform Carrying Roll-Over for SRTP
RFC 4733 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
RFC 4961 Symmetric RTP / RTP Control Protocol
RFC 5109 RTP Payload Format for Generic Forward Error Correction
RFC 5117 RTP Topologies
RFC 5285 A General Mechanism for RTP Header Extensions
RFC 5450 Transmission Time Offsets in RTP Streams
RFC 5506 Support for Reduced-Size RTCP: Opportunities and Consequences
RFC 5761 Multiplexing RTP Data and Control Packets on a Single Port
RFC 6184 RTP Payload Format for H.264 Video
RFC 6642 RTCP Extension for a Third-Party Loss Report
RFC 6679 Explicit Congestion Notification (ECN) for RTP over UDP
RFC 6792 Guidelines for Use of the RTP Monitoring Framework
RFC 6843 RTP Control Protocol (RTCP) Extended Report (XR) Block for Delay Metric Reporting
RFC 6865 Simple Reed-Solomon Forward Error Correction (FEC) Scheme for FECFRAME
RFC 6958 RTCP XR Block for Burst/Gap Loss Metric Reporting
RFC 7002 RTCP XR Block for Discard Count Metric Reporting
RFC 7003 RTCP XR Block for Burst/Gap Discard Metric Reporting
RFC 7004 RTCP XR Blocks for Summary Statistics Metrics Reporting
RFC 7005 RTCP XR Block for De-Jitter Buffer Metric Reporting
RFC 7022 Guidelines for Choosing RTP Control Protocol (RTCP) Canonical Names (CNAMEs)
RFC 7097 RTCP XR for RLE of Discarded Packets
RFC 7160 Support for Multiple Clock Rates in an RTP Session
RFC 7164 RTP and Leap Seconds
RFC 7198 Duplicating RTP Streams
RFC 7201 Options for Securing RTP Sessions
RFC 7202 Securing the RTP Framework: Why RTP Does Not Mandate a Single Media Security Solution
RFC 7243 RTCP XR Block for the Bytes Discarded Metric
RFC 7244 RTCP XR Blocks for Synchronization Delay and Offset Metrics Reporting
RFC 7266 RTCP XR Blocks for Mean Opinion Score (MOS) Metric Reporting
RFC 7273 RTP Clock Source Signalling
RFC 7294 RTCP XR Blocks for Concealment Metrics Reporting on Audio Applications
RFC 7380 RTCP XR Blocks for MPEG2 Transport Stream (TS) Program Specific Information (PSI) Decodability Statistics Metrics Reporting
RFC 7509 RTCP XR Blocks for Post-Repair Loss Count Metrics
RFC 7587 RTP Payload Format for the Opus Speech and Audio Codec
RFC 7667 RTP Topologies
RFC 7656 A Taxonomy of Semantics and Mechanisms for RTP Sources
RFC 7714 AES-GCM Authenticated Encryption in SRTP
RFC 7728 RTP Stream Pause and Resume
RFC 7741 RTP Payload Format for VP8 Video
RFC 7798 RTP Payload Format for High Efficiency Video Coding (HEVC)
RFC 7867 RTCP XR Blocks for Loss Concealment Metrics for Video Applications
RFC 7941 RTP Header Extension for RTCP Source Description Items
RFC 8022 Using Codec Control Messages in the RTP Audio-Visual Profile with Feedback with Layered Codecs
RFC 8083 Multimedia Congestion Control: Circuit Breakers for Unicast RTP Sessions
RFC 8088 How to Write an RTP Payload Format
RFC 8108 Sending Multiple RTP Streams in a Single RTP Session
RFC 8285 A General Mechanism for RTP Header Extensions
RFC 8286 RTP/RTCP Extension for RTP Splicing Notification
RFC 8451 Considerations for Selecting RTCP XR Metrics for the WebRTC Statistics API
RFC 8627 RTP Payload Format for Flexible Forward Error Correction (FEC)

HTTP-Related Documents
RFC Document Title
RFC 2616 Hypertext Transfer Protocol -- HTTP/1.1
RFC 2617 HTTP Authentication: Basic and Digest Access Authentication
RFC 3310 HTTP Digest Authentication Using Authentication and Key Agreement (AKA)

MIME-Related Documents
RFC Document Title
RFC 1847 Security Multiparts for MIME: Multipart/Signed and Multipart/Encrypted
RFC 2045 MIME Part One: Format of Internet Message Bodies
RFC 2046 MIME Part Two: Media Types
RFC 2047 MIME Part Three: Message Header Extensions for Non-ASCII Text
RFC 2048 MIME Part Four: Registration Procedures (obsolete: see RFC 4288 and RFC 4289)
RFC 2633 S/MIME Version 3 Message Specification
RFC 3204 MIME media types for ISUP and QSIG Objects
RFC 3420 Internet Media Type message/sipfrag
RFC 3555 MIME Type Registration of RTP Payload Formats
RFC 4288 Media Type Specifications and Registration Procedures
RFC 4289 Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures

SIP Standards Track Documents (Options, Extensions, etc.)
RFC Document Title
RFC 2976 The SIP INFO Method (obsolete: see RFC 6086)
RFC 2848 Extensions for IP Access to Telephone Call Services
RFC 3050 CGI for SIP
RFC 3311 UPDATE Method
RFC 3312 Integration of Resource Management and SIP
RFC 3313 Private SIP Extensions for Media Authorization
RFC 3319 DHCPv6 Options for SIP Servers
RFC 3323 A Privacy Mechanism for SIP
RFC 3324 Short Term Requirements for Network Asserted Identity
RFC 3325 Private Extensions to SIP for Asserted Identity within Trusted Networks
RFC 3326 The Reason Header Field
RFC 3327 Extension Header Field for Registering Non-Adjacent Contacts
RFC 3329 Security Mechanism Agreement
RFC 3361 DHCP-for-IPv4 Option for SIP Servers
RFC 3372 SIP for Telephones (SIP-T): Context and Architectures
RFC 3398 ISUP to SIP Mapping
RFC 3428 SIP Extension for Instant Messaging
RFC 3455 Private Header Extensions for 3GPP
RFC 3515 The Session Initiation Protocol (SIP) Refer Method
RFC 3578 Mapping ISUP Overlapped Signalling to SIP
RFC 3581 Extension to SIP for Symmetric Response Routing
RFC 3608 Extension Header Field for Service Route Discovery During Registration
RFC 3680 SIP Event Package for Registrations
RFC 3840 Indicating User Agent Capabilities in SIP
RFC 3841 Caller Preferences for SIP
RFC 3842 Message Summary and Message Waiting Indication Event Package
RFC 3856 Presence Event Package
RFC 3857 A Watcher Information Event Template-Package
RFC 3891 "Replaces" Header
RFC 3892 Referred-By Mechanism
RFC 3893 SIP Authenticated Identity Body (AIB)
RFC 3911 SIP "Join" Header
RFC 3903 Event State Publication
RFC 3959 Early Session Disposition Type
RFC 3960 Early Media and Ringing Tone Generation
RFC 4028 Session Timers in the Session Initiation Protocol (SIP)
RFC 4092 Using SDP Alternative NAT Semantics in SIP (obsolete: see RFC 5245)
RFC 4235 An INVITE-Initiated Dialog Event Package for SIP
RFC 4244 Extension for Request History Information
RFC 4320 Actions Addressing Identified Issues with the SIP Non-INVITE Transaction
RFC 4411 Extending the SIP Reason Header for Preemption Events
RFC 4412 Communications Resource Priority for SIP
RFC 4474 Enhancements for Authenticated Identity Management in SIP
RFC 4479 A Data Model for Presence
RFC 4483 A Mechanism for Content Indirection in SIP
RFC 4488 Suppression of SIP REFER Method Implicit Subscription
RFC 4508 Conveying Feature Tags with the SIP REFER Method
RFC 4575 SIP Event Package for Conference State
RFC 4662 SIP Event Notification Extension for Resource Lists
RFC 4730 Event Package for KPML
RFC 4780 MIB for SIP
RFC 4904 Representing Trunk Groups in tel/sip URIs
RFC 4916 Connected Identity in SIP
RFC 4967 Dial String Parameter for the SIP URI
RFC 4975 Message Session Relay Protocol (MSRP)
RFC 4976 Relay Extension for MSRP
RFC 5079 Rejecting Anonymous Requests in SIP
RFC 5196 SIP User Agent Capability Extension to Presence Information Data Format (PIDF)
RFC 5239 A Framework for Centralized Conferencing
RFC 5245 ICE: A Protocol for NAT Traversal for Offer/Answer Protocols
RFC 5263 SIP Extension for Partial Notification of Presence Information
RFC 5264 Publication of Partial Presence Information
RFC 5362 SIP Pending Additions Event Package
RFC 5363 Framework and Security Considerations for SIP URI-List Services
RFC 5365 Multiple-Recipient MESSAGE Requests in SIP
RFC 5366 Conference Establishment Using Request-Contained Lists in SIP
RFC 5367 Subscriptions to Request-Contained Resource Lists in SIP
RFC 5368 Referring to Multiple Resources in SIP
RFC 5370 SIP Conference Bridge Transcoding Model
RFC 5373 Requesting Answering Modes for SIP
RFC 5393 Addressing an Amplification Vulnerability in SIP Forking Proxies
RFC 5478 IANA Registration of new SIP Resource-Priority Namespaces
RFC 5509 IANA Registration Instant Messaging and Presence DNS SRV RRs for SIP
RFC 5552 SIP Interface to VoiceXML Media Services
RFC 5589 SIP Call Control - Transfer
RFC 5621 Message Body Handling in SIP
RFC 5626 Managing Client-Initiated Connections in SIP
RFC 5627 Obtaining and Using Globally Routable User Agent URIs (GRUUs) in SIP
RFC 5628 Registration Event Package Extension for SIP GRUUs
RFC 5629 A Framework for Application Interaction in SIP
RFC 5630 The Use of the SIPS URI Scheme in SIP
RFC 5631 SIP Session Mobility
RFC 5658 Addressing Record-Route Issues in SIP
RFC 5688 A SIP Media Feature Tag for MIME Application Subtypes
RFC 5768 Indicating Support for Interactive Connectivity Establishment (ICE) in SIP
RFC 5839 An Extension to SIP Events for Conditional Event Notification
RFC 5875 An XML Configuration Access Protocol (XCAP) Diff Event Package
RFC 5922 Domain Certificates in SIP
RFC 5923 Connection Reuse in SIP
RFC 6026 Correct Transaction Handling for 2xx Responses to SIP INVITE Requests
RFC 6035 SIP Event Package for Voice Quality Reporting
RFC 6072 Certificate Management Service for SIP
RFC 6076 Basic Telephony SIP End-to-End Performance Metrics
RFC 6080 A Framework for SIP User Agent Profile Delivery
RFC 6086 SIP INFO Method and Package Framework
RFC 6140 Registration for Multiple Phone Numbers in SIP
RFC 6141 Re-INVITE and Target-Refresh Request Handling in SIP
RFC 6157 IPv6 Transition in SIP
RFC 6223 Indication of Support for Keep-Alive
RFC 6228 SIP Response Code for Indication of Terminated Dialog
RFC 6230 Media Control Channel Framework
RFC 6432 Carrying Q.850 Codes in Reason Header Fields in SIP
RFC 6442 Location Conveyance for SIP
RFC 6446 SIP Event Notification Extension for Notification Rate Control
RFC 6447 Filtering Location Notifications in SIP
RFC 6665 SIP-Specific Event Notification
RFC 6794 A Framework for Session Initiation Protocol (SIP) Session Policies
RFC 6795 A Session Initiation Protocol (SIP) Event Package for Session-Specific Policies
RFC 6809 Mechanism to Indicate Support of Features and Capabilities in the Session Initiation Protocol (SIP)
RFC 6872 The Common Log Format (CLF) for SIP: Framework and Information Model
RFC 6873 Format for the Session Initiation Protocol (SIP) Common Log Format (CLF)
RFC 6878 IANA Registry for the Session Initiation Protocol (SIP) "Priority" Header Field
RFC 6910 Completion of Calls for the Session Initiation Protocol (SIP)
RFC 6913 Indicating Fax over IP Capability in the Session Initiation Protocol (SIP)
RFC 7044 An Extension to the Session Initiation Protocol (SIP) for Request History Information
RFC 7090 Public Safety Answering Point (PSAP) Callback
RFC 7118 The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)
RFC 7403 A Media-Based Traceroute Function for SIP
RFC 7415 SIP Rate Control
RFC 7433 A Mechanism for Transporting User-to-User Call Control Information in SIP
RFC 7434 Interworking ISDN Call Control User Information with SIP
RFC 7462 URNs for the Alert-Info Header Field of SIP
RFC 7463 Shared Appearances of a SIP Address of Record (AOR)
RFC 7549 3GPP SIP URI Inter-Operator Traffic Leg Parameter
RFC 7584 STUN Message Handling for SIP Back-to-Back User Agents (B2BUAs)
RFC 7614 Explicit Subscriptions for the REFER Method
RFC 7621 A Clarification on the Use of Globally Routable User Agent URIs (GRUUs) in the SIP Event Notification Framework
RFC 7865 SIP Recording Metadata
RFC 7866 Session Recording Protocol
RFC 7879 DTLS-SRTP Handling in SIP Back-to-Back User Agents
RFC 7984 Locating SIP Servers in a Dual-Stack IP Network
RFC 8055 SIP Via Header Field Parameter to Indicate Received Realm
RFC 8079 Guidelines for End-to-End Support of RTCP in Back-to-Back User Agents (B2BUAs)
RFC 8155 TURN Server Auto Discovery
RFC 8197 A SIP Response Code for Unwanted Calls
RFC 8217 Clarifications for When to Use the name-addr Production in SIP Messages
RFC 8224 Authenticated Identity Management in SIP
RFC 8225 PASSporT: Personal Assertion Token
RFC 8226 Secure Telephone Identity Credentials: Certificates
RFC 8262 Content-ID Header Field in SIP
RFC 8421 Guidelines for Multihomed and IPv4/IPv6 Dual-Stack ICE
RFC 8443 Personal Assertion Token (PASSporT) Extension for Resource Priority Authorization
RFC 8445 ICE: A Protocol for NAT Traversal
RFC 8497 Marking SIP Messages to Be Logged
RFC 8558 PaSSporT Extension for Signature-based Handling of Asserted information using toKENs (SHAKEN)
RFC 8591 SIP-Based Messaging with S/MIME
RFC 8599 Push Notification with SIP
RFC 8606 ISDN User Part (ISUP) Cause Location Parameter for the SIP Reason Header Field

SIP Informational RFCs and BCP Documents
RFC Document Title
RFC 3087 Control of Service Context using SIP Request-URI
RFC 3351 User Requirements for SIP in Support of Speech/Hearing Impaired
RFC 3487 Requirements for Resource Priority Mechanisms for SIP
RFC 3603 Private SIP Proxy-to-Proxy Extensions for PacketCable Distributed Call Signaling (obsolete: see RFC 5503)
RFC 3665 SIP Basic Call Flow Examples
RFC 3666 SIP Public Switched Telephone Network (PSTN) Call Flows
RFC 3702 Authentication, Authorization, and Accounting Requirements for SIP
RFC 3824 Using E.164 numbers with SIP
RFC 3968 IANA Registry for SIP Header Field
RFC 3969 IANA Registry for SIP URI
RFC 3976 Interworking SIP and IN Applications
RFC 4117 Transcoding Services Invocation using 3PCC
RFC 4123 SIP-H.323 Interworking Requirements
RFC 4168 SCTP as a transport for SIP
RFC 4189 Requirements for End-to-Middle Security for SIP
RFC 4240 Basic Network Media Services with SIP
RFC 4245 High-Level Requirements for Tightly Coupled SIP Conferencing
RFC 4317 SDP Offer/Answer Examples
RFC 4321 Problems Identified Associated with the SIP Non-INVITE Transaction
RFC 4353 A Framework for Conferencing with SIP
RFC 4354 SIP Event Package and Data Format for Push-to-Talk over Cellular (PoC) Service
RFC 4453 Requirements for Consent-Based Communications in the SIP
RFC 4457 SIP P-User-Database Private-Header (P-Header)
RFC 4458 SIP URIs for Applications such as Voicemail and Interactive Voice Response (IVR)
RFC 4475 SIP Torture Test Messages
RFC 4484 Trait-Based Authorization Requirements for SIP
RFC 4485 Guidelines for Authors of Extensions to SIP
RFC 4504 SIP Telephony Device Requirements and Configuration
RFC 4538 Request Authorization through Dialog Identification in SIP
RFC 4596 Guidelines for Usage of the SIP Caller Preferences Extension
RFC 4579 SIP Call Control - Conferencing for User Agents
RFC 4964 The P-Answer-State Header Extension to SIP
RFC 5002 SIP P-Profile-Key Private Header (P-Header)
RFC 5009 Private Header (P-Header) Extension to SIP for Authorization of Early Media
RFC 5039 SIP and Spam
RFC 5057 Multiple Dialog Usages in SIP
RFC 5118 SIP Torture Test Messages for IPv6
RFC 5194 Framework for Real-Time Text using SIP
RFC 5359 SIP Service Examples
RFC 5390 Requirements for Management of Overload in SIP
RFC 5407 Example Call Flows of Race Conditions in SIP
RFC 5411 A Hitchhiker's Guide to SIP
RFC 5479 Requirements and Analysis of Media Security Management Protocols
RFC 5502 SIP P-Served-User Private-Header (P-Header) for the 3GPP Core Network
RFC 5503 Private SIP Proxy-to-Proxy Extensions for Supporting the PacketCable Distributed Call Signaling Architecture
RFC 5318 The SIP P-Refused-URI-List Private-Header (P-Header)
RFC 5369 Framework for Transcoding with SIP
RFC 5606 Implications of 'retransmission-allowed' for SIP Location Conveyance
RFC 5638 Simple SIP Usage Scenario for Applications in the Endpoints
RFC 5767 User-Agent-Driven Privacy Mechanism for SIP
RFC 5850 A Call Control and Multi-Party Usage Framework for SIP
RFC 5853 Requirements for SIP Session Border Control (SBC) Deployments
RFC 5876 Updates to Asserted Identity in SIP
RFC 5897 Identification of Communications Services in SIP
RFC 5947 Requirements for Multiple Address of Record (AOR) Reachability Information in SIP
RFC 5989 A SIP Event Package for Subscribing to Changes to an HTTP Resource
RFC 6011 SIP User Agent Configuration
RFC 6044 Mapping and Interworking of Diversion Information between Diversion and History-Info Headers in SIP
RFC 6050 A SIP Extension for the Identification of Services
RFC 6216 Example Call Flows Using SIP Security Mechanisms
RFC 6271 Requirements for SIP-Based Session Peering
RFC 6314 NAT Traversal Practices for Client-Server SIP
RFC 6337 SIP Usage of the Offer/Answer Model
RFC 6341 Use Cases and Requirements for SIP-Based Media Recording (SIPREC)
RFC 6357 Design Considerations for SIP Overload Control
RFC 6404 Session PEERing for Multimedia INTerconnect (SPEERMINT) Security Threats and Suggested Countermeasures
RFC 6405 Voice over IP (VoIP) SIP Peering Use Cases
RFC 6406 Session PEERing for Multimedia INTerconnect (SPEERMINT) Architecture
RFC 6567 Problem Statement and Requirements for Transporting User-to-User Call Control Information in SIP
RFC 7088 Session Initiation Protocol Service Example -- Music on Hold
RFC 7092 A Taxonomy of Session Initiation Protocol (SIP) Back-to-Back User Agents
RFC 7131 Session Initiation Protocol (SIP) History-Info Header Call Flow Examples
RFC 7135 Registering a SIP Resource Priority Header Field Namespace for Local Emergency Communications
RFC 7206 Requirements for an End-to-End Session Identifier in IP-Based Multimedia Communication Networks
RFC 7245 An Architecture for Media Recording Using the Session Initiation Protocol
RFC 7340 Secure Telephone Identity Problem Statement and Requirements
RFC 7375 Secure Telephone Identity Threat Model
RFC 7501 Terminology for Benchmarking SIP Devices: Basic Session Setup and Registration
RFC 7502 Methodology for Benchmarking SIP Devices: Basic Session Setup and Registration
RFC 7544 Mapping and Interworking of Diversion Information between Diversion and History-Info Header Fields in SIP
RFC 7651 3GPP IP Multimedia Subsystems (IMS) Option for the Internet Key Exchange Protocol Version 2 (IKEv2)
RFC 7890 Concepts and Terminology for Peer-to-Peer SIP (P2PSIP)
RFC 7976 Updates to Private Header (P-Header) Extension Usage in SIP Requests and Responses
RFC 8068 SIP Recording Call Flows
RFC 8119 SIP "cause" URI Parameter for Service Number Translation

SIP-Related Documents
RFC Document Title
RFC 3219 Telephony Routing over IP (TRIP) (tutorial)
RFC 3320 Signalling Compression
RFC 3321 Signalling Compression - Extended Operations
RFC 3322 Signalling Compression - Requirements and Assumptions
RFC 3486 Compressing the Session Initiation Protocol (SIP)
RFC 3485 SIP and SDP Static Dictionary for Signaling Compression
RFC 3725 Best Current Practices for 3PCC in SIP
RFC 3761 The E.164 to URI Dynamic Delegation Discovery System Application (ENUM)
RFC 3764 enumservice registration for SIP Addresses-of-Record
RFC 3966 The tel URI for Telephone Numbers
RFC 4077 A Negative Acknowledgement Mechanism for Signaling Compression
RFC 4083 3GPP Release 5 Requirements on SIP
RFC 4465 Signaling Compression (SigComp) Torture Tests
RFC 4497 Interworking between the SIP and QSIG
RFC 4715 The ISDN Subaddress Encoding Type for tel URI
RFC 4740 Diameter SIP Application
RFC 4795 The ENUM Dip Indicator Parameter for the "tel" URI
RFC 5049 Applying Signaling Compression to SIP
RFC 5112 The Presence-Specific Static Dictionary for Signaling Compression
RFC 5115 TRIP attribute for Resource Priority
RFC 5341 The IANA tel URI Parameter Registry
RFC 5806 Diversion Indication in SIP
RFC 5924 Extended Key Usage (EKU) for SIP X.509 Certificates
RFC 6917 Media Resource Brokering
RFC 7058 Media Control Channel Framework (CFW) Call Flow Examples
RFC 8602 Update to the Telephony Routing over IP (TRIP) IANA Registry Rules regarding Postal Addresses
RFC 7205 Use Cases for Telepresence Multistreams
RFC 7262 Requirements for Telepresence Multistreams

Directory Services Documents
Standard Document Title
H.350 Directory Services Architecture for Multimedia Conferencing
H.350.4 Directory Services Architecture for SIP

This page is maintained by Paul E. Jones. Please feel free to report an errors directly to me.