Wireshark · Ethereal-users: AW: [Ethereal-users] Fax over IP with T.38 and H.323

["Andreas Heise" <aheise@xxxxxx>]

Title: Fax over IP with T.38 and H.323

Hello,

 

before you can decode the stream as T.38 you must seperate the T.38 packets in an own capture file

(display filter "rtp.version == 0", save only displayed packets to new file like my attachment)

after you can use decode as T.38....

 

If anybody know better way?

 

brgds,

Andreas

-----Ursprüngliche Nachricht-----
Von: ethereal-users-bounces@xxxxxxxxxxxx [mailto:ethereal-users-bounces@xxxxxxxxxxxx]Im Auftrag von Lips, Peter
Gesendet: Mittwoch, 18. Mai 2005 10:35
An: ethereal-users@xxxxxxxxxxxx
Betreff: [Ethereal-users] Fax over IP with T.38 and H.323

If I analyze the fax traffic between my 2 FoIP gateways, I get RTP protocol information "Unknown RTP version 0" instead of the real fax signalling information.

Is there any possibility to display the correct fax info or is a new Ethereal version planned which supports H.323 fax.
(When using SIP the fax messages are correctly displayed).
I'm using version 0.10.11.

Attached you'll find a cap file containing successful fax transmission.

Best regards

Peter Lips

<<fax T.38 and H.323.cap>>

Attachment: t.38_only.cap
Description: Binary data