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ABNF for SDP
RFC 4566and many other RFCs

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 5576 – Source-Specific Media Attributes

RFC 5576Section 4Section 10  —  see also:  IANA

 


attribute  =/
ssrc-attr =
"ssrc:"  ssrc-idSPattribute
;  see  Section 4.1  and  Figure 4 of RFC 5576
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ssrc-group-attr =
"ssrc-group:"  semantics  *( SPssrc‑id )
;  see  Section 4.2  and  Figure 5 of RFC 5576
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semantics =
"FEC"  /     ; see   RFC 5576
"FID"  /     ; see   RFC 5576
"FEC-FR"  /     ; see   RFC 5956Section 4.3
"DUP"  /     ; see   RFC 7104Section 3.2
token
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cname-attr =
"cname:"  cname
;  see  Section 6.1  and  Figure 6 of RFC 5576
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previous-ssrc-attr =
"previous‑ssrc:"  ssrc‑id  *( SPssrc‑id )
;  see  Section 6.2  and  Figure 7 of RFC 5576
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cname =
byte-string
; following the syntax conventions for CNAME as defined in   RFC 3550Section 6.5.1
; with guidelines in   RFC 7022
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ssrc-id =
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