I have 2 traces I have saved, one includes a phone to system connection
and the second is ip Phone to IP phone connection. The first stream is
as I expected, with H.225 used for call setup and the voice wrapped in
RTP.
The second stream, does not appear to use RTP??? All I see are UDP
packets with 32 byte payloads, but no distinguishing wrappers for the
data.
The system is an Avaya IP Office with an Avaya VoIP phone on this end.
Depending on the call the other end is terminated either in the same
type IP Phone or a corresponding digital phone. I would expect the IP
Office to decode the IP for a connection to the digital phone and the
addressing seems to confirm this.
Has anyone else seem this or am I missing something as I capture packets?
John G.
Ethereal 0.10.10 & WinPCap 3.1 beta 4
--
John Graves
Dynamic Devices Inc.
781-245-9100
Your source for
Security, Wireless LANS & Wide Area Networking for converged Data, Voice and Video
