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Does anyone know of a tool to use to analyze analog fax transmissions - T30.

asked 31 Jan '14, 08:57

fax's gravatar image

accept rate: 0%

Well, this is really not related to Wireshark!

Why? Because you want to capture and analyze ISDN or analog signals, carrying the T.30 protocol.

So, you need a hardware T.30 analyzer.

How do you find one?

Answer (to your question): invest 15 seconds to google it:

See also here:


permanent link

answered 31 Jan '14, 11:09

Kurt%20Knochner's gravatar image

Kurt Knochner ♦
accept rate: 15%


Thanks for the reply. tone not neccesary. I invested more than 3 hours searching and only found 1 real sotuion which is $7,500.00 just for the basics. Not knowing where Wireshark was going with R&D and knowing that you could handle T.38 I decided to see if there was an option for this within WS.

(31 Jan '14, 11:18) fax

Never mind, just my kind of fun/humor ;-)) I hope my Google link was helpful.

(31 Jan '14, 12:33) Kurt Knochner ♦

where Wireshark was going with R&D

It's not going anywhere that involves developing hardware. :-) That's not what we do.

If somebody else develops a hardware device that can plug into a host and supply to software running on the host the "Binary coded signal functions and formats" described in section 5.3 of T.30 (well, I have some pre-publication version, so maybe the section number changed), then it might be possible to have Wireshark (or libpcap/WinPcap, with Wireshark using that) get those HDLC messages and analyze them. If a fax modem card can do that, great; if it takes a $7,500 hardware device, I guess with a suitably-modified version of Wireshark (and possibly libpcap) plus $7,500, you could do it.

(31 Jan '14, 14:17) Guy Harris ♦♦
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question asked: 31 Jan '14, 08:57

question was seen: 1,681 times

last updated: 31 Jan '14, 14:17

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