SDP question - scope of $ in m= line fmt parameter

"Matia Marcu" <[email protected]>
Newsgroups gmane.ietf.megaco
Message-ID <[email protected]>
According to rfc 4566, it is possible to use "$" in the fmt field of the
media description lines.

 

Does the "$" cover a mixture of fixed and dynamic payloads? For example:
is the following exchange legal (assuming ReserveValue=true)?

 

command:         m=audio $ RTP/AVP $

 

reply:                m=audio 4444 RTP/AVP 8 18 120 13

                        a=rtpmap:120 telephone-event/8000

a=fmtp:120 0-15

a=fmtp:18 annexb=yes

 

Many thanks,

Matia

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