Could some kind soul please point me to the definitive guide to the use of RTP dynamic payload types in H.245. I've looked and can't seem to find any adequate coverage.
If anybody has firm ideas how it's done, I would be pleased to receive the benefit of their knowledge.
The documentation talks about the use of dynamic payload types in the use of alternative packetisation for video, but there seems to be a need for dynamic payload types in audio codecs which have H.245 code points, but not RTP static payload types (such as GSM HR and EFR).
Dynamic payload types are being used for mode specification in SDP as well, with some MGs using them to specify the desired rate for G.723.1 (High or Low).
IMHO, the standard needs to be expanded on the use of dynamic paylaod types, with particular reference to interworking with SDP based MGs and SIP.
Cheers,
Douglas Clowes
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