
Session Description Protocol (SDP) Parameters - per [RFC2327]

(last updated 2003-04-28)

See [RFC2327] for registration procedures.


Type            SDP Name                     Reference
----            ------------------           ---------
proto           RTP/AVP                      [RFC2327]
                vat                          [historic]
                rtp                          [historic]
                UDPTL                        [ITU-T Rec. T.38 (Section 9)]  
                TCP                          [RFC793]


Type            SDP Name                     Reference
----            ------------------           ---------
bwtype          CT                           [RFC2327]
                AS                           [RFC2327]
                RS                           [RFCRTCP]
                RR                           [RFCRTCP]

Type            SDP Name                     Reference
----            ------------------           ---------
nettype         IN                           [RFC2327]


Type            SDP Name                     Reference
----            ------------------           ---------
addrtype        IP4                          [RFC2327]
                IP6                          [RFC2327, RFC3266]


Type            SDP Name                     Reference
----            ------------------           ---------
enckey          clear                        [RFC2327]
                base64                       [RFC2327]
                uri                          [RFC2327]
                prompt                       [RFC2327]


Type            SDP Name                     Reference
----            ------------------           ---------
att-field (session level)
                cat                          [RFC2327]
                keywds                       [RFC2327]
                type                         [RFC2327]
                type:broadcast               [RFC2327]
                type:H332                    [ITU Recommendation H.332]
                type:meeting                 [RFC2327]
                type:moderated               [RFC2327]
                type:test                    [RFC2327]
                charset                      [RFC2327]
                charset:iso8895-1            [RFC2327]
                tool                         [RFC2327]
                ipbcp                        [ITU-T Q.1970]
                group                        [RFCMFID]

Type            SDP Name                     Reference
----            ------------------           ---------
att-field (both session and media level)
                recvonly                     [RFC2327]
                sendrecv                     [RFC2327]
                sendonly                     [RFC2327]
                sdplang                      [RFC2327]
                lang                         [RFC2327]
                h248item                     [ITU-T H.248 Annex N]
                sqn                          [RFC3435]
                cdsc                         [RFC3435]				
                cpar                         [RFC3435]
                cparmin                      [RFC3435]
                cparmax                      [RFC3435]

 
Type            SDP Name                     Reference
----            ------------------           ---------
att-field (media level only)
                ptime                        [RFC2327]
                orient                       [RFC2327]
                orient:portrait              [RFC2327]
                orient:landscape             [RFC2327]
                orient:seascape              [RFC2327]
                framerate                    [RFC2327]
                quality                      [RFC2327]
                rtpmap                       [RFC2327]
                fmtp                         [RFC2327]
                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]

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]


References
----------
[ITU-T H.248 Annex N] ITU-T Recommendation H.248 Annex N, "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.
           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.

[RFC2327]  M. Handley and V. Jacobson, "SDP: Session Description 
           Protocol", RFC 2327, April 1998.

[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.

[RFCRTCP]  S. Casner, "SDP Bandwidth Modifiers for RTCP Bandwidth", 
           RFCXXXX, Month Year.

[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.

(registry created 2001-06-15)

[]

