[h323plus] RTP Packet Issue
kc ooi
kcooi12345 at gmail.com
Wed Mar 2 02:41:46 EST 2011
Dear H323plus Team members,
>
>
Recently, I have done H.323 testing (simple conference
without presentation channel opened) and captured the video packets using
wireshark.
> I found that when both endpoints are polycom PVX system, there are extra
> video packets (ie. coded slice data partition A, coded slice of an IDR
> picture, and subsequent ..,) with difference with dynamic payload type value
> (eg. actual video payload type is 109, it has payload type 99) tranferring
> to each other site during conference.
>
It will not happened if either site using other H.323 system(not polycom
system).
What is the purpose of this packet as It seems like the received site
can form even a complete picture?
>
>
Thanks.
>
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