
Session Description Protocol (SDP) Parameters - per [RFC4566]

(last updated 2006-09-12)

Registries included below:
SDP Parameters
- proto
- bwtype
- nettype
- addrtype
- enckey (REGISTRY OBSOLETED)
- att-field (session level)
- att-field (both session and media level)
- att-field (media level only)
- att-field (unknown level)
Semantics for the "group" SDP Attribute
"rtcp-fb" Attribute Values
"ack" and "nack" Attribute Values
SDP/RTSP key management protocol identifiers 

See [RFC4566] for registration procedures.

Registration Procedures: RFC (Standards-Track preferred)
Type            SDP Name                     Reference
----            ------------------           ---------
proto           RTP/AVP                      [RFC4566]
                vat                          [historic]
                rtp                          [historic]
                udptl                        [ITU-T Rec. T.38 (Section 9)]  
                TCP                          [RFC4145]
                RTP/AVPF                     [RFC4585.txt]
                TCP/RTP/AVP                  [RFC4571]
                RTP/SAVP                     [RFC3711]
                TCP/BFCP                     [RFC-ietf-mmusic-sdp-bfcp-03.txt]
                TCP/TLS/BFCP                 [RFC-ietf-mmusic-sdp-bfcp-03.txt]
                TCP/TLS                      [RFC4572]

Registration Procedures: Standards-Track RFC
Type            SDP Name                     Reference
----            ------------------           ---------
bwtype          CT                           [RFC4566]
                AS                           [RFC4566]
                RS                           [RFC3556]
                RR                           [RFC3556]
                TIAS                         [RFC3890]

Registration Procedures: RFC
Type            SDP Name                     Reference
----            ------------------           ---------
nettype         IN                           [RFC4566]


Registration Procedures: RFC
Type            SDP Name                     Reference
----            ------------------           ---------
addrtype        IP4                          [RFC4566]
                IP6                          [RFC4566]

REGISTRY OBSOLETED - No further registrations accepted
Type            SDP Name                     Reference
----            ------------------           ---------
enckey          clear                        [RFC4566]
                base64                       [RFC4566]
                uri                          [RFC4566]
                prompt                       [RFC4566]

Registration Procedures: Specification Required
Type            SDP Name                     Reference
----            ------------------           ---------
att-field (session level)
                cat                          [RFC4566]
                keywds                       [RFC4566]
                type                         [RFC4566]
                type:broadcast               [RFC4566]
                type:H332                    [ITU Recommendation H.332]
                type:meeting                 [RFC4566]
                type:moderated               [RFC4566]
                type:test                    [RFC4566]
                charset                      [RFC4566]
                charset:iso8895-1            [RFC4566]
                tool                         [RFC4566]
                ipbcp                        [ITU-T Q.1970]
                group                        [RFCMFID]

Registration Procedures: Specification Required              
Type            SDP Name                     Reference
----            ------------------           ---------
att-field (both session and media level)
                recvonly                     [RFC4566]
                sendrecv                     [RFC4566]
                sendonly                     [RFC4566]
                sdplang                      [RFC4566]
                lang                         [RFC4566]
                h248item                     [ITU-T H.248.15]
                sqn                          [RFC3435]
                cdsc                         [RFC3435]				
                cpar                         [RFC3435]
                cparmin                      [RFC3435]
                cparmax                      [RFC3435]
                rtcp-xr                      [RFC-ietf-avt-rtcp-report-extns-06.txt]
                maxprate                     [RFC3890]
                setup                        [RFC4145]
                connection                   [RFC4145]
                key-mgmt                     [RFC4567]
                source-filter                [RFC4570]
                inactive                     [RFC4566]
                fingerprint                  [RFC4572]

Registration Procedures: Specification Required
Type            SDP Name                     Reference
----            ------------------           ---------
att-field (media level only)
                ptime                        [RFC4566]
                orient                       [RFC4566]
                orient:portrait              [RFC4566]
                orient:landscape             [RFC4566]
                orient:seascape              [RFC4566]
                framerate                    [RFC4566]
                quality                      [RFC4566]
                rtpmap                       [RFC4566]
                fmtp                         [RFC4566]
                rtpred1                      [historic; use fmtp as per RFC2198]
                rtpred2                      [historic; use fmtp as per RFC2198]
                T38FaxVersion                [ITU-T Rec. T.38 Annex D]
                T38MaxBitRate                [ITU-T Rec. T.38 Annex D]
                T38FaxFillBitRemoval         [ITU-T Rec. T.38 Annex D]
                T38FaxTranscodingMMR         [ITU-T Rec. T.38 Annex D]
                T38FaxTranscodingJBIG        [ITU-T Rec. T.38 Annex D]
                T38FaxRateManagement         [ITU-T Rec. T.38 Annex D] 
                T38FaxMaxBuffer              [ITU-T Rec. T.38 Annex D] 
                T38FaxMaxDatagram            [ITU-T Rec. T.38 Annex D]
                T38FaxUdpEC                  [ITU-T Rec. T.38 Annex D] 
                maxptime                     [RFC3267]
                desired-status               [RFC3312]
                current-status               [RFC3312]
                conf-status                  [RFC3312]
                mid                          [RFCMFID]
                rtcp                         [RFC3605]
                rtcp-fb                      [RFC4585]
                label                        [RFC4574]
                T38VendorInfo                [ITU-T Rec. T.38 Annex D]
                crypto                       [RFC4568]
                floorctrl                    [RFC-ietf-mmusic-sdp-bfcp-03.txt]
                confid                       [RFC-ietf-mmusic-sdp-bfcp-03.txt]
                userid                       [RFC-ietf-mmusic-sdp-bfcp-03.txt]
                floorid                      [RFC-ietf-mmusic-sdp-bfcp-03.txt]

Registration Procedures: Specification Required
Type            SDP Name                     Reference
----            ------------------           ---------
att-field (unknown level)
                eecid                        [RFC3108]
                aalType                      [RFC3108] 
                capability                   [RFC3108]
                qosClass                     [RFC3108]
                bcob                         [RFC3108]
                stc                          [RFC3108]
                upcc                         [RFC3108]
                atmQOSparms                  [RFC3108]
                atmTrfcDesc                  [RFC3108]
                abrParms                     [RFC3108]
                abrSetup                     [RFC3108]
                bearerType                   [RFC3108]
                lij                          [RFC3108]
                anycast                      [RFC3108]
                cache                        [RFC3108]
                bearerSigIE                  [RFC3108]
                aalApp                       [RFC3108]
                cbrRate                      [RFC3108]
                sbc                          [RFC3108]
                clkrec                       [RFC3108]
                fec                          [RFC3108]
                prtfl                        [RFC3108]
                structure                    [RFC3108]
                cpsSDUsize                   [RFC3108]
                aal2CPS                      [RFC3108]
                aal2CPSSDUrate               [RFC3108]
                aal2sscs3661unassured        [RFC3108]
                aal2sscs3661assured          [RFC3108]
                aal2sscs3662                 [RFC3108]
                aal5sscop                    [RFC3108]
                atmmap                       [RFC3108]
                silenceSupp                  [RFC3108]
                ecan                         [RFC3108]
                gc                           [RFC3108]
                profileDesc                  [RFC3108]
                vsel                         [RFC3108]
                dsel                         [RFC3108]
                fsel                         [RFC3108]
                onewaySel                    [RFC3108]
                codecconfig                  [RFC3108]
                isup_usi                     [RFC3108]
                uiLayer1_Prot                [RFC3108]
                chain                        [RFC3108]


Semantics for the "group" SDP Attribute

Semantics                           Token     Reference
-------------------                 -----     ---------
Lip Synchronization                 LS        [RFC3388]
Flow Identification                 FID       [RFC3388]
Single Reservation flow             SRF       [RFC3524]
Alternative Network Address Types   ANAT      [RFC4091]

"rtcp-fb" Attribute Values - per [RFC4585]
Value Name  Long Name                          Reference
----------  ---------------------------------  ---------
ack         Positive acknowledgement           [RFC4585] 
nack        Negative Acknowledgement           [RFC4585]
trr-int     Minimal receiver report interval   [RFC4585]
app         Application-defined paramater      [RFC4585]


"ack" and "nack" Attribute Values - per [RFC4585]
Value Name  Long Name                               Usable with  Reference
----------  --------------------------------------- -----------  ---------
sli         Slice Loss Indication                   nack         [RFC4585]
pli         Picture Loss Indication                 nack         [RFC4585]
rpsi        Reference Picture Selection Indication  ack, nack    [RFC4585]
app         Application layer feedback              ack, nack    [RFC4585]

SDP/RTSP key management protocol identifiers - per [RFC4567]
(associated with the protocol identifier KMPID)
Registration Procedures: Specification Required
Value Name  Long Name                               Reference
----------  --------------------------------------- ---------
mikey       Multimedia Internet KEYing              [RFC4567]


References
----------
[ITU-T H.248-15] ITU-T Recommendation H.248.15, "SDP H.248
          Package Attribute"

[ITU-T Q.1970]  ITU-T Recommendation Q.1970, "BICC IP bearer control
           protocol" (07/2001)

[ITU-T Rec. T.38] ITU-T Recommendation T.38, 'Procedures for real-time 
           Group 3 facsimile communication over IP networks', June 1998.
           http://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-T.38

[ITU-T Rec. T.38 Annex D] ITU-T Recommendation T.38 Amendment 2 Annex D, 
           'SIP/SDP Call Establishment Procedures', February 2000, July 2005.
           http://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-T.38

[RFC2198]  C. Perkins, I. Kouvelas, O. Hodson, V. Hardman, M. Handley
           J.C. Bolot, A. Vega-Garcia, and S. Fosse-Parisis, "RTP Payload 
           for Redundant Audio Data", RFC 2198, September 1997.

[RFC3108]  R. Kumar and M. Mostafa, "Conventions for the use of 
           the Session Description Protocol (SDP) for ATM Bearer 
           Connections", RFC 3108, May 2001.
           <http://www.rfc-editor.org/rfc/rfc3108.txt>

[RFC3266]  S. Olson, G. Camarillo,  and A. Roach "Support for IPv6 in SDP",
           RFC 3266, June 2002.
		   
[RFC3267]  J. Sjoberg, M. Westerlund, A. Lakaniemi, and Q. Xie, "RTP payload 
           format and file storage format for the Adaptive Multi-Rate(AMR) 
           and Adaptive Multi-Rate Wideband (AMR-WB) audio codecs", RFC 3267,
           June 2002.

[RFC3312]  G. Camarillo, W. Marshall, and J. Rosenberg, "Integration of Resource 
           Management and SIP", RFC 3312, September 2002.

[RFC3388]  G. Camarillo, J. Holler, and H. Schulzrinne, "Grouping of media 
           lines in SDP", RFC 3388, November 2002.

[RFC3435]  F. Andreasen, "SDP Simple Capability Declaration", RFC 3435,
           December 2002.		   		      

[RFC3524]  G. Camarillo and A. Monrad, "Mapping of Media Streams to 
           Resource Reservation Flows", RFC 3524, April 2003.

[RFC3556]  S. Casner, "SDP Bandwidth Modifiers for RTCP Bandwidth", 
           RFC3556, July 2003.

[RFC3605]  C. Huitema, "RTCP attribute in SDP", RFC 3605, October 2003.

[RFC3711]  M. Baugher, D. McGrew, M. Naslund, E. Carrara and K. Norrman,
           "The Secure Real-time Transport Protocol (SRTP)", RFC 3711,
           March 2004.

[RFC-ietf-avt-rtcp-report-extns-06.txt]
           T. Friedman, R. Caceres, and A. Clark, "RTP Control Protocol 
           Extended Reports (RTCP XR)", RFC XXXX, Month Year.

[RFC3890]  M. Westerlund, "A Transport Independent Bandwidth Modifier 
           for the Session Description Protocol (SDP)", RFC 3890, September 2004.

[RFC4091]  G. Camarillo and J. Rosenberg, "The Alternative Network Address 
           Types Semantics (ANAT) for the Session Description Protocol (SDP) 
           Grouping Framework", RFC 4091, June 2005.

[RFC4145]  D. Yon and G. Camarillo, "TCP-Based Media Transport in the Session 
           Description Protocol (SDP)", RFC 4145, September 2005.

[RFC4585]  J. Ott, S. Wenger, N. Sato, C. Burmeister, and J. Rey", Extended RTP 
           Profile for RTCP-based Feedback (RTP/AVPF), RFC 4585, July 2006.

[RFC4574]  O. Levin and G. Camarillo, "The SDP (Session Description Protocol) 
           Label Attribute", RFC 4574, August 2006.
 
[RFC4568]  F. Andreasen, M. Baugher and D. Wing, "Session Description Protocol 
           Security Descriptions for Media Streams", RFC 4568, July 2006.

[RFC4567]  F. Andreasen, M. Baugher, and D. Wing, "Session Description Protocol 
           Security Descriptions for Media Streams", RFC 4567, July 2006.

[RFC4571]  J. Lazzaro, "Framing RTP and RTCP Packets over Connection-Oriented 
           Transport", RFC 4571, July 2006.

[RFC4570]  B. Quinn and R. Finlayson, "Session Description Protocol (SDP) 
           Source Filters", RFC 4570, July 2006.
 
[RFC-ietf-mmusic-sdp-bfcp-03.txt]
           G. Camarillo, "Session Description Protocol (SDP) Format for Binary 
           Floor Control Protocol (BFCP) Streams", RFC XXXX, Month Year.

[RFC4566]  M. Handley, V. Jacobson and C. Perkins, "SDP: Session Description 
           Protocol", RFC 4566, June 2006.
 
[RFC4572]  J. Lennox, "Connection-Oriented Media Transport over the Transport Layer 
           Security (TLS) Protocol in the Session Description Protocol (SDP)", RFC 4572,
           July 2006.

(registry created 15 June 2001)

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