| This page is maintained by Paul E. Jones. |
| RFC 2543 | SIP: Session Initiation Protocol (obsolete) |
| RFC 3261 | SIP: Session Initiation Protocol |
| RFC 2327 | Session Description Protocol (SDP) |
| 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 |
| RFC 3407 | Session Description Protocol (SDP) Simple Capability Declaration |
| 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 3550 | RTP: Transport Protocol for Real-Time Applications |
| RFC 3551 | RTP Profile for A/V Conferences with Minimal Control |
| RFC 2198 | RTP Payload for Redundant Audio Data |
| RFC 2733 | An RTP Payload Format for Generic Forward Error Correction |
| RFC 2793 | RTP Payload for Text Conversation |
| RFC 2833 | RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals |
| RFC 2959 | Real-Time Transport Protocol Management Information Base |
| RFC 3389 | RTP Payload for Comfort Noise |
| RFC 3611 | RTP Control Protocol Extended Reports (RTCP XR) |
| RFC 3711 | The Secure Real-time Transport Protocol (SRTP) |
| 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) |
| RFC 3310 | HTTP Digest Authentication Using Authentication and Key Agreement (AKA) |
| 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 |
| 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 3087 | Control of Service Context using SIP Request-URI |
| RFC 3351 | User Requirements for SIP in Support of Speech/Hearing Impaired |
| RFC 3603 | Private SIP Proxy-to-Proxy Extensions for PacketCable Distributed Call Signaling |
| RFC 3702 | Authentication, Authorization, and Accounting Requirements for SIP |
| RFC 3824 | Using E.164 numbers with SIP |
| RFC 3911 | The SIP "Join" Header |
| RFC 3968 | IANA Registry for SIP Header Field |
| RFC 3969 | IANA Registry for SIP URI |
| RFC 3976 | Interworking SIP and IN Applications |
| RFC 3219 | Telephony Routing over IP (TRIP) (tutorial) |
| RFC 3320 | Signalling Compression |
| RFC 3321 | Signalling Compression - Extended Operations (informational) |
| RFC 3322 | Signalling Compression - Requirements and Assumptions (informational) |
| 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 3764 | enumservice registration for SIP Addresses-of-Record |
| H.350 | Directory Services Architecture for Multimedia Conferencing |
| H.350.4 | Directory Services Architecture for SIP |