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

["Matia Marcu" <Matia.Marcu at Teledata-Networks.com>]

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