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ABNF for SDP – Session Description Protocol

|   Session Description   |   v=   |   o=   |   s=   |   i=   |   u=   |   e=   |   p=   |   c=   |   b=   |   t=  r=  z=   |   k=   |   a=   |   m=   |   SDP Addressing   |   SDP generic rules   |   "a=" SDP Attributes   |

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SDP attributes defined in
RFC 4566 – SDP

RFC 4566Section 6

|   a=cat   |   a=keywds   |   a=tool   |   a=ptime   |   a=maxptime   |   a=rtpmap   |   a=recvonly   |   a=sendrecv   |   a=sendonly   |   a=inactive   |   a=orient   |   a=type   |   a=charset   |   a=sdplang   |   a=lang   |   a=framerate   |   a=quality   |   a=fmtp   |

Note:  no ABNF definitions for theses attributes

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;   a=cat:<category>
;   see  Here  in RFC 4566
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;   a=keywds:<keywords>
;   see  Here  in RFC 4566
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;   a=tool:<name and version of tool>
;   see  Here  in RFC 4566
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;   a=ptime:<packet time>
;   see  Here  in RFC 4566
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;   a=maxptime:<maximum packet time>
;   see  Here  in RFC 4566
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;   a=rtpmap:<payload type> <encoding name> / <clock rate> [/ <encoding parameters>]
;   see  Here  in RFC 4566
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;   a=recvonly
;   see  Here  in RFC 4566
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;   a=sendrecv
;   see  Here  in RFC 4566
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;   a=sendonly
;   see  Here  in RFC 4566
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;   a=inactive
;   see  Here  in RFC 4566
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;   a=orient:<orientation>
;   see  Here  in RFC 4566
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;   a=type:<conference type>
;   see  Here  in RFC 4566
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;   a=charset:<character set>
;   see  Here  in RFC 4566
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;   a=sdplang:<language tag>
;   see  Here  in RFC 4566
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;   a=lang:<language tag>
;   see  Here  in RFC 4566
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;   a=framerate:<frame rate>
;   see  Here  in RFC 4566
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;   a=quality:<quality>
;   see  Here  in RFC 4566
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;   a=fmtp:<format> <format specific parameters>
;   see  Here  in RFC 4566
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