RE: Q931 over TCP

Please could you send your trace?
 
Also note that Ethereal is no longer maintained, all development has
moved to
Wireshark: http://www.wireshark.org
<BLOCKED::/exchweb/bin/redir.asp?URL=http://www.wireshark.org>  .

 
________________________________

From: [email protected]
[mailto:[email protected]] On Behalf Of Mike Ollington
Sent: Wednesday, July 12, 2006 8:50 AM
To: [email protected]
Subject: [Ethereal-users] Q931 over TCP


Hello,
 
I have a capture with 802.1q VLAN tags taken between an Avaya IP handset
and an Avaya Call Manager and I'm trying to understand call setup.  I
presumed this was H323 (tcp 1720) and tried the two `decode as' options
only to produce nonsense and assumed that it was proprietory.
 
By chance, I opened the same trace in Wildpackets Omnipeek, which
identified the traffic as TPKT and Q931 and within this I could see call
setup data.  When I attempt to `decode as' the traffic as TPKT, Ethereal
doesn't realise there is Q931 in there with the info showing an unknown
TPDU type (0x0).
 
Am I doing something wrong?  Is there a way to decode directly as Q931
rather than relying on the TPKT dissector to work it out?
 
Thanks,
Mike


--
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Checked by AVG Free Edition.
Version: 7.1.394 / Virus Database: 268.9.10/385 - Release Date:
11/07/2006

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