Session Description Protocol (SDP) Parameters

Created
2001-06-15
Last Updated
2019-11-06
Available Formats

XML

HTML

Plain text

Registries included below

media

Registration Procedure(s)
Standards Action
Reference
[RFC-ietf-mmusic-rfc4566bis-37]
Available Formats

CSV
Type SDP Name Reference
media audio [RFC-ietf-mmusic-rfc4566bis-37]
media video [RFC-ietf-mmusic-rfc4566bis-37]
media text [RFC-ietf-mmusic-rfc4566bis-37]
media application [RFC-ietf-mmusic-rfc4566bis-37]
media message [RFC-ietf-mmusic-rfc4566bis-37]
media image [RFC6466]

proto

Registration Procedure(s)
RFC Required
Reference
[RFC-ietf-mmusic-rfc4566bis-37]
Note
Standards Track RFC preferred.
    
Available Formats

CSV
Type SDP Name Reference
proto RTP/AVP [RFC-ietf-mmusic-rfc4566bis-37]
proto udp [RFC-ietf-mmusic-rfc4566bis-37]
proto vat [1]
proto rtp [1]
proto udptl [ITU-T Recommendation T.38, 'Procedures for real-time Group 3 facsimile communication over IP networks', June 1998. (Section 9)]
proto TCP [RFC4145]
proto RTP/AVPF [RFC4585]
proto TCP/RTP/AVP [RFC4571]
proto RTP/SAVP [RFC3711]
proto TCP/BFCP [RFC-ietf-bfcpbis-rfc4583bis-27]
proto TCP/TLS/BFCP [RFC-ietf-bfcpbis-rfc4583bis-27]
proto TCP/TLS [RFC8122]
proto FLUTE/UDP [RFC-mehta-rmt-flute-sdp-05]
proto TCP/MSRP [RFC4975]
proto TCP/TLS/MSRP [RFC4975]
proto DCCP [RFC5762]
proto DCCP/RTP/AVP [RFC5762]
proto DCCP/RTP/SAVP [RFC5762]
proto DCCP/RTP/AVPF [RFC5762]
proto DCCP/RTP/SAVPF [RFC5762]
proto RTP/SAVPF [RFC5124]
proto UDP/TLS/RTP/SAVP [RFC5764]
proto DCCP/TLS/RTP/SAVP [RFC5764]
proto UDP/TLS/RTP/SAVPF [RFC5764]
proto DCCP/TLS/RTP/SAVPF [RFC5764]
proto UDP/MBMS-FEC/RTP/AVP [RFC6064]
proto UDP/MBMS-FEC/RTP/SAVP [RFC6064]
proto UDP/MBMS-REPAIR [RFC6064]
proto FEC/UDP [RFC6364]
proto UDP/FEC [RFC6364]
proto TCP/MRCPv2 [RFC6787]
proto TCP/TLS/MRCPv2 [RFC6787]
proto PSTN [RFC7195]
proto UDP/TLS/UDPTL [RFC7345]
proto voice [RFC2848]
proto fax [RFC2848]
proto pager [RFC2848]
proto TCP/RTP/AVPF [RFC7850]
proto TCP/RTP/SAVP [RFC7850]
proto TCP/RTP/SAVPF [RFC7850]
proto TCP/DTLS/RTP/SAVP [RFC7850]
proto TCP/DTLS/RTP/SAVPF [RFC7850]
proto TCP/TLS/RTP/AVP [RFC7850]
proto TCP/TLS/RTP/AVPF [RFC7850]
proto TCP/WS/BFCP [RFC-ietf-bfcpbis-bfcp-websocket-15]
proto TCP/WSS/BFCP [RFC-ietf-bfcpbis-bfcp-websocket-15]
proto UDP/DTLS/SCTP [RFC-ietf-mmusic-sctp-sdp-25]
proto TCP/DTLS/SCTP [RFC-ietf-mmusic-sctp-sdp-25]
proto TCP/DTLS/BFCP [RFC-ietf-bfcpbis-rfc4583bis-27]
proto UDP/BFCP [RFC-ietf-bfcpbis-rfc4583bis-27]
proto UDP/TLS/BFCP [RFC-ietf-bfcpbis-rfc4583bis-27]

bwtype

Registration Procedure(s)
Standards Action
Reference
[RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Type SDP Name Mux Category Reference
bwtype CT NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
bwtype AS SUM [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
bwtype RS SUM [RFC3556][RFC-ietf-mmusic-sdp-mux-attributes-16]
bwtype RR SUM [RFC3556][RFC-ietf-mmusic-sdp-mux-attributes-16]
bwtype TIAS SPECIAL [RFC3890][RFC-ietf-mmusic-sdp-mux-attributes-16]

nettype

Registration Procedure(s)
RFC Required
Reference
[RFC-ietf-mmusic-rfc4566bis-37]
Available Formats

CSV
Type SDP Name Usable addrtype Values Reference
nettype IN IP4, IP6 [RFC-ietf-mmusic-rfc4566bis-37]
nettype TN [RFC2543] [RFC2848]
nettype ATM NSAP, GWID, E164 [RFC3108]
nettype PSTN E164 [RFC7195]

addrtype

Registration Procedure(s)
RFC Required
Reference
[RFC-ietf-mmusic-rfc4566bis-37]
Available Formats

CSV
Type SDP Name Reference
addrtype IP4 [RFC-ietf-mmusic-rfc4566bis-37]
addrtype IP6 [RFC-ietf-mmusic-rfc4566bis-37]
addrtype NSAP [RFC3108]
addrtype GWID [RFC3108]
addrtype E164 [RFC7195][RFC3108]

enckey

Registration Procedure(s)
REGISTRY OBSOLETED - No further registrations accepted
Reference
[RFC-ietf-mmusic-rfc4566bis-37]
Available Formats

CSV
Type SDP Name Reference
enckey clear [RFC-ietf-mmusic-rfc4566bis-37]
enckey base64 [RFC-ietf-mmusic-rfc4566bis-37]
enckey uri [RFC-ietf-mmusic-rfc4566bis-37]
enckey prompt [RFC-ietf-mmusic-rfc4566bis-37]

att-field

Registration Procedure(s)
Specification Required
Expert(s)
Flemming Andreasen
Reference
[RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Type SDP Name Usage Level Mux Category Reference
attribute 3ge2ae media IDENTICAL [3GPP TS 24.229 12.14.0][Frederic_Firmin]
attribute 3gpp_MaxRecvSDUSize session, media NORMAL [3GPP TS 26.114 v16.3.0][_3GPP_Specifications_Manager][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3gpp_mtsi_app_adapt media IDENTICAL-PER-PT [3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
attribute 3gpp_sync_info session, media NORMAL [3GPP TS 26.114 v16.3.0][_3GPP_Specifications_Manager][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3GPP-Adaptation-Support media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3GPP-Asset-Information session, media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3GPP-Integrity-Key session CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3GPP-QoE-Metrics session, media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3GPP-SDP-Auth session CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3GPP-SRTP-Config media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3gpp-videopostdecbufsize media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute 3gpp.iut.replication session, media TBD [3GPP TS 24.337 10.7.0][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aal2CPS media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aal2CPSSDUrate media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aal2sscs3661assured media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aal2sscs3661unassured media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aal2sscs3662 media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aal5sscop media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aalApp media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute aalType media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute abrParms media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute abrSetup media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute acap session, media INHERIT [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute accept-types media TBD [RFC4975][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute accept-wrapped-types media TBD [RFC4975][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute acfg media SPECIAL [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute alt media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute alt-default-id media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute alt-group session CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute altc media TRANSPORT [RFC6947][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute anbr media IDENTICAL [3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
attribute anycast media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute atmmap media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute atmQOSparms media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute atmTrfcDesc media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bc_program session NORMAL [Sonia_Compans][TS 183 063 R3 ETSI TISPAN Technical Specification TS 183 063 "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IMS-based IPTV stage 3 specification"][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bc_service session NORMAL [Sonia_Compans][TS 183 063 R3 ETSI TISPAN Technical Specification TS 183 063 "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IMS-based IPTV stage 3 specification"][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bc_service_package session NORMAL [Sonia_Compans][TS 183 063 R3 ETSI TISPAN Technical Specification TS 183 063 "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IMS-based IPTV stage 3 specification"][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bcap session, media INHERIT [RFC7006][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bcastversion session NORMAL [RFC5159][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bcob media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bearerSigIE media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bearerType media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute bfcpver media TBD [RFC-ietf-bfcpbis-rfc4583bis-27]
attribute bundle-only media NORMAL [RFC-ietf-mmusic-sdp-bundle-negotiation-52]
attribute bw-info media IDENTICAL-PER-PT [3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
attribute cache media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute calgextmap session, media NORMAL [RFC7266][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute candidate media TRANSPORT [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute capability media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cat session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cbrRate media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ccap session, media IDENTICAL [RFC7006][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ccc_list session NORMAL [3GPP TS 26.114 v16.3.0][_3GPP_Specifications_Manager]
attribute cdsc session, media NORMAL [RFC3407][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cfw-id media NORMAL [RFC6230][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute chain media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute channel media NORMAL [RFC6787][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute charset session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute charset:iso8895-1 session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute chatroom media TBD [RFC7701][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute clir session, media TBD [RFC2848][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute clkrec media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cmid media NORMAL [RFC6787][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cname source NORMAL [RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute codecconfig media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute conf media CAUTION [RFC3312][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute confid media NORMAL [RFC4583][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute connection session, media TRANSPORT [RFC4145][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute content media NORMAL [RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute content-desc session, media TBD [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute control session, media CAUTION [RFC2326][RFC7826][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cpar session, media INHERIT [RFC3407][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cparmax session, media SPECIAL [RFC3407][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cparmin session, media SPECIAL [RFC3407][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cpsSDUsize media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute creq session, media NORMAL [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute crypto media TRANSPORT [RFC4568][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute cs-correlation media TBD [RFC7195][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute csup session, media NORMAL [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute curr media CAUTION [RFC3312][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute dccp-port media CAUTION [RFC6773][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute dccp-service-code media CAUTION [RFC5762][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute dcmap media SPECIAL [RFC-ietf-mmusic-data-channel-sdpneg-28]
attribute dcsa media SPECIAL [RFC-ietf-mmusic-data-channel-sdpneg-28]
attribute depend media IDENTICAL-PER-PT [RFC5583][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute des media CAUTION [RFC3312][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute dsel media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute duplication-delay session, media NORMAL [RFC7197][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ebuacip media TBD [EBU Tech 3368 - Audio Contribution over IP – Profiles][Felix_Poulin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ecan media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ecn-capable-rtp media IDENTICAL [RFC6679][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute eecid media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute end-of-candidates session, media IDENTICAL [RFC-ietf-mmusic-trickle-ice-sip-18]
attribute etag session, media CAUTION [RFC2326][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute extmap session, media SPECIAL [RFC8285][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute extmap-allow-mixed session, media IDENTICAL [RFC8285]
attribute fec media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute FEC media NORMAL [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute FEC-declaration session, media TBD [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute FEC-OTI-extension session, media TBD [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute fec-repair-flow media SPECIAL [RFC6364][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute fec-source-flow media SPECIAL [RFC6364][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute file-date media TBD [RFC5547][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute file-disposition media TBD [RFC5547][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute file-icon media TBD [RFC5547][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute file-range media TBD [RFC5547][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute file-selector media TBD [RFC5547][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute file-transfer-id media TBD [RFC5547][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute fingerprint session, media TRANSPORT [RFC8122][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute floorctrl media TBD [RFC4583][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute floorid media NORMAL [RFC4583][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute flute-ch session, media TBD [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute flute-tsi session, media TBD [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute fmtp media, source IDENTICAL-PER-PT [RFC5576][RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute framerate media IDENTICAL-PER-PT [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute framesize media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute fsel media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute g.3gpp.crs media NORMAL [3GPP TS 24.183 v9.5.0 annex E][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute gc media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute gpmd media TBD [ITU-T Rec. V.150.1][ITU-T Rec. V.152][Simao_Campos-Neto]
attribute group session NORMAL [RFC5888][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute h248item session, media SPECIAL [ITU-T H.248.15][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute hlang-recv media NORMAL [RFC8373]
attribute hlang-send media NORMAL [RFC8373]
attribute icap session, media NORMAL [RFC7006][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ice-lite session NORMAL [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ice-mismatch media NORMAL [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ice-options session NORMAL [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ice-pacing session NORMAL [RFC-ietf-mmusic-ice-sip-sdp-39]
attribute ice-pwd session, media TRANSPORT [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ice-ufrag session, media TRANSPORT [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute identity session NORMAL [RFC-ietf-rtcweb-security-arch-20]
attribute ike-setup session, media IDENTICAL [RFC6193][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute imageattr media IDENTICAL-PER-PT [RFC6236][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute inactive session, media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ipbcp session SPECIAL [ITU-T Recommendation Q.1970, "BICC IP bearer control protocol" (07/2001)][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute isup_usi media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute key-mgmt session, media IDENTICAL [RFC4567][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute keywds session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute label media NORMAL [RFC4574][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute lang session, media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute lcfg media SPECIAL [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute lij media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute loopback media NORMAL [RFC6849][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute loopback-mirror media NORMAL [RFC6849][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute loopback-source media NORMAL [RFC6849][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute max-message-size media CAUTION [RFC-ietf-mmusic-sctp-sdp-25]
attribute max-size media TBD [RFC4975][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute maxmptime media TBD [ITU-T Recommendation V.152 "Procedures for supporting voice-band data over IP networks", September 2010][Simao_Campos-Neto]
attribute maxprate session, media SPECIAL [RFC3890][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute maxptime media IDENTICAL-PER-PT [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mbms-flowid media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mbms-mode session, media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mbms-repair session, media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mediaclk session, media, source NORMAL [RFC7273][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mfcap session, media IDENTICAL-PER-PT [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mid media NORMAL [RFC5888][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mscap session, media INHERIT [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute msid media TBD [RFC-ietf-mmusic-msid-15][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute msrp-cema media TBD [RFC6714][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute mtag session, media CAUTION [RFC7826][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute multicast-rtcp session, media IDENTICAL [RFC6128][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omcap session, media NORMAL [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-codecs media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-m-att media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-m-bw media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-m-cksum media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-s-att media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-s-bw media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute omr-s-cksum media NORMAL [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute onewaySel media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute orient media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute orient:landscape media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute orient:portrait media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute orient:seascape media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute path media TBD [RFC4975][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute pcfg media SPECIAL [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute phone-context session, media TBD [RFC2848][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute pmft media TBD [ITU-T Recommendation V.152 "Procedures for supporting voice-band data over IP networks", September 2010][Simao_Campos-Neto]
attribute portmapping-req media CAUTION [RFC6284][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute predefined_ROI media IDENTICAL-PER-PT [3GPP TS 26.114 v16.3.0][_3GPP_Specifications_Manager]
attribute previous-ssrc source NORMAL [RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute profileDesc media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute prtfl media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute PSCid session NORMAL [Sonia_Compans][TS 183 063 R3 ETSI TISPAN Technical Specification TS 183 063 "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); IMS-based IPTV stage 3 specification"][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute psk-fingerprint session, media IDENTICAL [RFC6193][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ptime media IDENTICAL-PER-PT [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute Q763-INN session, media TBD [RFC2848][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute Q763-nature session, media TBD [RFC2848][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute Q763-plan session, media TBD [RFC2848][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute qos-mech-recv session, media TRANSPORT [RFC5432][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute qos-mech-send session, media TRANSPORT [RFC5432][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute qosClass media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute quality media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rams-updates media CAUTION [RFC6285][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute range session, media CAUTION [RFC2326][RFC7826][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute record session, media TBD [RFC7866][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute recordpref session, media TBD [RFC7866][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute recvonly session, media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute remote-candidates media TRANSPORT [RFC-ietf-mmusic-ice-sip-sdp-39][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute repair-window media SPECIAL [RFC6364][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute require session, media TBD [RFC2848][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute resource media NORMAL [RFC6787][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rid media SPECIAL [RFC-ietf-mmusic-rid-15]
attribute rmcap session, media IDENTICAL-PER-PT [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp media TRANSPORT [RFC3605][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-fb media IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-idms media NORMAL [RFC7272][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-mux media IDENTICAL [RFC5761][RFC8035][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-mux-only media TBD [RFC-ietf-mmusic-mux-exclusive-10][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-rgrp session, media TBD [RFC-ietf-avtcore-rtp-multi-stream-optimisation-12][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-rsize media IDENTICAL [RFC5506][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-unicast media IDENTICAL [RFC5760][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtcp-xr session, media NORMAL [RFC3611][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtpmap media IDENTICAL-PER-PT [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtpred1 media CAUTION [2][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtpred2 media CAUTION [2][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute rtsp-ice-d-m session TBD [RFC7825][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute sbc media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute sctp-port media CAUTION [RFC-ietf-mmusic-sctp-sdp-25]
attribute sdplang session, media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute secondary-realm media TRANSPORT [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute sendonly session, media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute sendrecv session, media NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute sescap session CAUTION [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute setup session, media, dcsa (msrp) TRANSPORT [RFC4145][RFC-ietf-mmusic-sdp-mux-attributes-16][draft-mmusic-msrp-usage-data-channel]
attribute silenceSupp media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute simulcast media NORMAL [RFC-ietf-mmusic-sdp-simulcast-13]
attribute source-filter session, media IDENTICAL [RFC4570][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute sqn session, media NORMAL [RFC3407][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute SRTPAuthentication media TBD [RFC5159][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute SRTPROCTxRate media TBD [RFC5159][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ssrc media NORMAL [RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ssrc-group media NORMAL [RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute stc media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute stkmstream session, media NORMAL [RFC5159][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute structure media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute suspended session, media TBD [NENA STA-010.2-2016][Brian_Rosen][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxFillBitRemoval media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxMaxBuffer media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxMaxDatagram media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxMaxIFP media TBD [ITU-T Recommendation T.38 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][Simao_Campos-Neto][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxRateManagement media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxTranscodingJBIG media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxTranscodingMMR media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxUdpEC media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxUdpECDepth media TBD [ITU-T Recommendation T.38 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][Simao_Campos-Neto][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxUdpFECMaxSpan media TBD [ITU-T Recommendation T.38 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][Simao_Campos-Neto][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38FaxVersion media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38MaxBitRate media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38ModemType media TBD [ITU-T Recommendation T.38 Annex D, 'SIP/SDP Call Establishment Procedures', September 2010][Simao_Campos-Neto][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute T38VendorInfo media TBD [ITU-T Recommendation T.38 Amendment 2 Annex D, 'SIP/SDP Call Establishment Procedures', February 2000, July 2005.][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute tcap session, media INHERIT [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute tls-id media IDENTICAL [RFC-ietf-mmusic-dtls-sdp-32]
attribute tool session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute ts-refclk session, media, source NORMAL [RFC7273][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute type session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute type:H332 session NORMAL [ITU Recommendation H.332][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute type:broadcast session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute type:meeting session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute type:moderated session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute type:test session NORMAL [RFC-ietf-mmusic-rfc4566bis-37][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute uiLayer1_Prot media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute upcc media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute userid media NORMAL [RFC4583][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute vbd (OBSOLETE) media TBD [ITU-T Recommendation V.152 "Procedures for supporting voice-band data over IP networks", September 2010][Simao_Campos-Neto]
attribute visited-realm media TRANSPORT [TS 24.229 v10.7.0 table 7.5.2][Frederic_Firmin][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute vndpar session, media TBD [ITU-T Rec. V.150.1][ITU-T Rec. V.152][Simao_Campos-Neto]
attribute vsel media CAUTION [RFC3108][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute websocket-uri media CAUTION [RFC8124]
attribute X-decbyterate media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute X-initpostdecbufperiod media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute X-initpredecbufperiod media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute X-predecbufsize media CAUTION [RFC6064][RFC-ietf-mmusic-sdp-mux-attributes-16]
attribute zrtp-hash media TRANSPORT [RFC6189][RFC-ietf-mmusic-sdp-mux-attributes-16]

content SDP Parameters

Registration Procedure(s)
Specification Required
Expert(s)
Gonzalo Camarillo
Reference
[RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Type SDP Name Description Mux Category Reference
content slides Presentation slides NORMAL [RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
content speaker Image from the speaker NORMAL [RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
content sl Sign language NORMAL [RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
content main Main media stream NORMAL [RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
content alt Alternative media stream NORMAL [RFC4796][RFC-ietf-mmusic-sdp-mux-attributes-16]
content g.3gpp.cat Stream associated with the 3GPP Customized Alerting Ringtone (CAT) service NORMAL [3GPP TS 24.182 v11.2.0][Frederic_Firmin]

Semantics for the "group" SDP Attribute

Registration Procedure(s)
Standards Action
Reference
[RFC5888][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Semantics Token Mux Category Reference
Lip Synchronization LS NORMAL [RFC5888][RFC-ietf-mmusic-sdp-mux-attributes-16]
Flow Identification FID NORMAL [RFC5888][RFC-ietf-mmusic-sdp-mux-attributes-16]
Single Reservation flow SRF NORMAL [RFC3524][RFC-ietf-mmusic-sdp-mux-attributes-16]
Alternative Network Address Types ANAT CAUTION [RFC4091][RFC-ietf-mmusic-sdp-mux-attributes-16]
Forward Error Correction (Deprecated) FEC NORMAL [RFC5956][RFC-ietf-mmusic-sdp-mux-attributes-16]
Forward Error Correction FR FEC-FR NORMAL [RFC5956][RFC-ietf-mmusic-sdp-mux-attributes-16]
Composite Session CS NORMAL [RFC-mehta-rmt-flute-sdp-05][RFC-ietf-mmusic-sdp-mux-attributes-16]
Decoding Dependency DDP NORMAL [RFC5583][RFC-ietf-mmusic-sdp-mux-attributes-16]
Duplication DUP NORMAL [RFC7104][RFC-ietf-mmusic-sdp-mux-attributes-16]
Splice SPLICE TBD [RFC8286][RFC-ietf-mmusic-sdp-mux-attributes-16]
Media bundling BUNDLE NORMAL [RFC-ietf-mmusic-sdp-bundle-negotiation-52]

"rtcp-fb" Attribute Values

Registration Procedure(s)
First Come First Served with permanent, stable, and publically accessible document.
Reference
[RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Value Name Long Name Mux Category Reference
ack Positive acknowledgement IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
app Application-defined parameter SPECIAL [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
ccm Codec Control Commands and Indications IDENTICAL-PER-PT [RFC5104][RFC-ietf-mmusic-sdp-mux-attributes-16]
nack Negative Acknowledgement IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
trr-int Minimal receiver report interval IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
3gpp-roi-arbitrary Video region-of-interest (ROI) arbitrarily selected by the endpoint IDENTICAL-PER-PT [3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
3gpp-roi-predefined Video region-of-interest (ROI) pre-defined by the sender and selected by the endpoint IDENTICAL-PER-PT [3GPP TS 26.114 v16.3.0][Ozgur_Oyman]
3gpp-delay-budget Available or requested delay budget specified in milliseconds IDENTICAL-PER-PT [3GPP TS 26.114 v16.3.0][Ozgur_Oyman]

"ack" and "nack" Attribute Values

Registration Procedure(s)
First Come First Served with a permanent, stable, and publically accessible document
Reference
[RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Value Name Long Name Usable with Mux Reference
sli Slice Loss Indication nack IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
pli Picture Loss Indication nack IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
rpsi Reference Picture Selection Indication ack, nack IDENTICAL-PER-PT [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
app Application layer feedback ack, nack SPECIAL [RFC4585][RFC-ietf-mmusic-sdp-mux-attributes-16]
rai Rapid Acquisition Indication nack IDENTICAL-PER-PT [RFC6285][RFC-ietf-mmusic-sdp-mux-attributes-16]
tllei Transport-Layer Third-Party Loss Early Indication nack IDENTICAL-PER-PT [RFC6642][RFC-ietf-mmusic-sdp-mux-attributes-16]
pslei Payload-Specific Third-Party Loss Early Indication nack IDENTICAL-PER-PT [RFC6642][RFC-ietf-mmusic-sdp-mux-attributes-16]
ecn Explicit Congestion Notification nack IDENTICAL [RFC6679][RFC-ietf-mmusic-sdp-mux-attributes-16]

"depend" SDP Attribute Values

Registration Procedure(s)
Specification Required
Expert(s)
Stephan Wenger
Reference
[RFC5583][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Token Semantics Mux Category Reference
lay Layered decoding dependency IDENTICAL-PER-PT [RFC5583][RFC-ietf-mmusic-sdp-mux-attributes-16]
mdc Multi descriptive decoding dependency IDENTICAL-PER-PT [RFC5583][RFC-ietf-mmusic-sdp-mux-attributes-16]

"cs-correlation" Attribute Values

Registration Procedure(s)
Specification Required
Expert(s)
Bo Burman
Reference
[RFC7195][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Value Description Mux Category Reference
callerid Caller ID TBD [RFC7195][RFC-ietf-mmusic-sdp-mux-attributes-16]
uuie User-User Information Element TBD [RFC7195][RFC-ietf-mmusic-sdp-mux-attributes-16]
dtmf Dual-tone Multi-Frequency TBD [RFC7195][RFC-ietf-mmusic-sdp-mux-attributes-16]
external External TBD [RFC7195][RFC-ietf-mmusic-sdp-mux-attributes-16]

Semantics for the "ssrc-group" SDP Attribute

Registration Procedure(s)
Standards Action
Reference
[RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Token Semantics Mux Category Reference
FID Flow Identification NORMAL [RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
FEC Forward Error Correction NORMAL [RFC5576][RFC-ietf-mmusic-sdp-mux-attributes-16]
FEC-FR Forward Error Correction FR NORMAL [RFC5956][RFC-ietf-mmusic-sdp-mux-attributes-16]
DUP Duplication NORMAL [RFC7104][RFC-ietf-mmusic-sdp-mux-attributes-16]

SDP/RTSP key management protocol identifiers

Registration Procedure(s)
Specification Required
Expert(s)
Magnus Westerlund
Reference
[RFC4567][RFC-ietf-mmusic-sdp-mux-attributes-16]
Note
This registry of the key management protocol identifier, 
KMPID, has a name space that is shared between the SDP "key-mgmt" 
attribute and RTSP header "keymgmt".
    
Available Formats

CSV
Value Name Long Name Mux Category Reference
mikey Multimedia Internet KEYing IDENTICAL [RFC4567][RFC-ietf-mmusic-sdp-mux-attributes-16]

Codec Control Messages

Registration Procedure(s)
Specification Required
Expert(s)
Stephan Wenger
Reference
[RFC5104][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Value Name Long Name Usable with Mux Reference
fir Full Intra Request Command ccm IDENTICAL-PER-PT [RFC5104][RFC-ietf-mmusic-sdp-mux-attributes-16]
tmmbr Temporary Maximum Media Stream Bit Rate ccm IDENTICAL-PER-PT [RFC5104][RFC-ietf-mmusic-sdp-mux-attributes-16]
tstr Temporal-Spatial Trade-off ccm IDENTICAL-PER-PT [RFC5104][RFC-ietf-mmusic-sdp-mux-attributes-16]
vbcm H.271 video back channel messages ccm IDENTICAL-PER-PT [RFC5104][RFC-ietf-mmusic-sdp-mux-attributes-16]
pause Media Pause/Resume ccm TBD [RFC7728][RFC-ietf-mmusic-sdp-mux-attributes-16]
lrr Layer Refresh Request Command ccm IDENTICAL-PER-PT [RFC-ietf-avtext-lrr-07]

QoS Mechanism Tokens

Registration Procedure(s)
Specification Required
Expert(s)
Gonzalo Camarillo
Reference
[RFC5432][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
QoS Mechanism Mux Category Reference
rsvp TRANSPORT [RFC5432][RFC-ietf-mmusic-sdp-mux-attributes-16]
nsis TRANSPORT [RFC5432][RFC-ietf-mmusic-sdp-mux-attributes-16]

SDP Capability Negotiation Option Tags

Registration Procedure(s)
IETF Review
Reference
[RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Option Tag Mux Category Reference
cap-v0 NORMAL [RFC5939][RFC-ietf-mmusic-sdp-mux-attributes-16]
med-v0 NORMAL [RFC6871][RFC-ietf-mmusic-sdp-mux-attributes-16]
bcap-v0 NORMAL [RFC7006][RFC-ietf-mmusic-sdp-mux-attributes-16]
ccap-v0 NORMAL [RFC7006][RFC-ietf-mmusic-sdp-mux-attributes-16]
icap-v0 NORMAL [RFC7006][RFC-ietf-mmusic-sdp-mux-attributes-16]

SDP Capability Negotiation Configuration Parameters Registry

Registration Procedure(s)
IETF Review
Reference
[RFC5939][RFC6871]
Available Formats

CSV
Encoding Name Descriptive Name Potential Configuration Definition Actual Configuration Definition Latent Configuration Definition
a Attribute Configuration [RFC5939] [RFC5939] [RFC6871]
b Bandwidth [RFC7006] [RFC7006] [RFC7006]
c Connection Data [RFC7006] [RFC7006] [RFC7006]
i Title [RFC7006] [RFC7006] [RFC7006]
m Media Configuration [RFC6871] [RFC6871] [RFC6871]
mt Media Type [RFC6871] [RFC6871] [RFC6871]
pt Payload Type Number Mapping [RFC6871] [RFC6871] [RFC6871]
t Transport Protocol Configuration [RFC5939] [RFC5939] [RFC6871]

Timestamp Reference Clock Source Parameters

Registration Procedure(s)
Specification Required
Expert(s)
Magnus Westerlund
Reference
[RFC7273][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Name Long Name Mux Category Reference
ntp Network Time Protocol NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]
ptp Precision Time Protocol NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]
gps Global Positioning System NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]
gal Galileo NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]
glonass Global Navigation Satellite System NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]
local Local Clock NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]
private Private Clock NORMAL [RFC7273, section 4][RFC-ietf-mmusic-sdp-mux-attributes-16]

Media Clock Source Parameters

Registration Procedure(s)
Specification Required
Expert(s)
Magnus Westerlund
Reference
[RFC7273][RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Name Long Name Mux Category Reference
sender Asynchronously Generated Media Clock NORMAL [RFC7273, section 5][RFC-ietf-mmusic-sdp-mux-attributes-16]
direct Direct-Referenced Media Clock NORMAL [RFC7273, section 5][RFC-ietf-mmusic-sdp-mux-attributes-16]
IEEE1722 IEEE1722 Media Stream Identifier NORMAL [RFC7273, section 5][RFC-ietf-mmusic-sdp-mux-attributes-16]

Multiplexing Categories

Registration Procedure(s)
Standards Action
Reference
[RFC-ietf-mmusic-sdp-mux-attributes-16]
Available Formats

CSV
Multiplexing Categories Reference
NORMAL [RFC-ietf-mmusic-sdp-mux-attributes-16]
CAUTION [RFC-ietf-mmusic-sdp-mux-attributes-16]
IDENTICAL [RFC-ietf-mmusic-sdp-mux-attributes-16]
TRANSPORT [RFC-ietf-mmusic-sdp-mux-attributes-16]
SUM [RFC-ietf-mmusic-sdp-mux-attributes-16]
INHERIT [RFC-ietf-mmusic-sdp-mux-attributes-16]
IDENTICAL-PER-PT [RFC-ietf-mmusic-sdp-mux-attributes-16]
SPECIAL [RFC-ietf-mmusic-sdp-mux-attributes-16]
TBD [RFC-ietf-mmusic-sdp-mux-attributes-16]

association-usage Name Registry

Registration Procedure(s)
First Come First Served
Reference
[RFC-ietf-mmusic-sctp-sdp-25]
Available Formats

CSV
Name Reference Change Controller
webrtc-datachannel [RFC-ietf-mmusic-sctp-sdp-25][RFC-ietf-rtcweb-data-protocol-09] IESG

RID Attribute Parameters

Registration Procedure(s)
Specification Required
Expert(s)
Adam Roach
Reference
[RFC-ietf-mmusic-rid-15]
Available Formats

CSV
RID Parameter Name Reference
pt [RFC-ietf-mmusic-rid-15]
max-width [RFC-ietf-mmusic-rid-15]
max-height [RFC-ietf-mmusic-rid-15]
max-fps [RFC-ietf-mmusic-rid-15]
max-fs [RFC-ietf-mmusic-rid-15]
max-br [RFC-ietf-mmusic-rid-15]
max-pps [RFC-ietf-mmusic-rid-15]
max-bpp [RFC-ietf-mmusic-rid-15]
depend [RFC-ietf-mmusic-rid-15]

Candidate Attribute Extensions

Registration Procedure(s)
Specification Required
Expert(s)
Unassigned
Reference
[RFC-ietf-mmusic-ice-sip-sdp-39]
Name Description Change Controller Reference
No registrations at this time.

People

ID Name Contact URI Last Updated
[_3GPP_Specifications_Manager] 3GPP Specifications Manager mailto:3gppContact&etsi.org 2017-06-16
[Brian_Rosen] Brian Rosen mailto:br&brianrosen.net 2016-10-11
[Felix_Poulin] Felix Poulin, EBU-FNS Coordinator mailto:poulin&ebu.ch 2016-11-17
[Frederic_Firmin] Frederic Firmin mailto:frederic.firmin&etsi.org 2018-01-16
[Ozgur_Oyman] Ozgur Oyman mailto:ozgur.oyman&intel.com 2019-11-06
[Simao_Campos-Neto] Simão Campos-Neto mailto:simao.campos&itu.int 2019-07-30
[Sonia_Compans] Sonia Compans mailto:Sonia.Compans&etsi.org 2010-11-24

Footnotes

[1]
historic
[2]
historic; use fmtp as per [RFC2198]