SIP相关RFC

RFC 2327 (SDP: Session Description Protocal)

RFC 2782 (DNS SRV Resource Record)

RFC 2976 (The SIP Info Method)

RFC 3261 (SIP: Session Initiation Protocal)

RFC 3263 (Locating SIP Servers)

RFC 3264 (An Offer/Answer Mode with SDP)

RFC 3265 (SIP-specific event Notification)

RFC 3266 (Support for IPv6 in SDP)

RFC 3398 (Integreated Services Digital Network (ISDN) User Part(ISUP) to Session Initiation Protocal (SIP) mapping)

RFC 3403 (DNS NAPTR Resource Record)

RFC 3420 (Internet Media Message/sipfrag)

RFC 3515 (Refer Method)

RFC 3550 (RTP: A Transport protocal for real time applications)

RFC 3551 (RTP For Audio and Video Conferences)

RFC 3581 (Symetric Response Routing)

RFC 3891 ("Replaces" header)

RFC 4102 (text/red MINE sub-type)

RFC 4103 (RTP payload For Text conversation)

draft-ietf-sip-gruu-06 (Globally Routable User Agent URIs)

draft-ietf-sip-target-dialog-01 (Request Authorization through Dialog Identification in SIP)