[Freeswitch-users] Q931 decoding

Michael Collins msc at freeswitch.org
Mon Jan 19 10:46:46 PST 2009


Until Helmut gets his script, etc. all set the only choice you have is
to capture the debug output on the command line.
-MC

On Mon, Jan 19, 2009 at 10:42 AM, Gopalakrishnan A.N <saigop at gmail.com> wrote:
> How can I capture Q931 packets by separating the D channel and B channel?
>
> On Mon, Jan 19, 2009 at 7:23 PM, Michal Bielicki
> <michal.bielicki at voiceworks.pl> wrote:
>>
>> It is both :)
>>
>> Helmut Kuper schrieb:
>>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Hello Michael,
>>
>> I'm currently on my way to put all those shell and perl stuff into C
>> code. As soon as that works I try to put it in ozmod_isdn. So after that
>> FS will be able to enable Q931Pcapfile generation. After that I will
>> send the patch to FS.
>>
>> Hope this is ok for you.
>>
>>
>> What do you mean with "help with jira"? I thought it is just a bug
>> tracker... If it's also a feature request tool, I will feed it with
>> documentation about what I did.
>>
>>
>> regards
>> helmut
>>
>> Am 17.01.2009 21:44, schrieb Michael S Collins:
>>
>>
>> Guys this is awesome! Helmut, if you need any help with jira just let
>> me know.
>> -MC
>>
>> Sent from my iPhone
>>
>> On Jan 17, 2009, at 9:20 AM, Brian West <brian at freeswitch.org> wrote:
>>
>>
>>
>> Maybe open a jira with this info?  Maybe it can all be done as a one
>> step process in the ozmod_isdn  ;)
>>
>> /b
>>
>> On Jan 17, 2009, at 10:58 AM, Helmut Kuper wrote:
>>
>>
>>
>> Hi Brian,
>>
>> currently it's a simple perl script which greps all Q931 hexdumps
>> from
>> FS logfile converting them to a TPKT packet, and writing those to a
>> separate local file (wireshark's text2pcap file format). This 1st
>> step
>> is easy to put right into FS ozmod_isdn debug code.
>> The 2nd step is to convert the new file into a .pcap file with adding
>> TCP/IP dummy packet in front of each TPKT packet. This is done via
>> test2pcap. This .pcap file is ready to be decoded by wireshark.
>>
>> I put both steps into a little shell script and added a 3rd step to
>> get
>> those .pcap file emailed from the Server to my Desktop.
>>
>> regards
>> helmut
>>
>>
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>
>
>
> --
> Thank you  with regards,
> Gopal,
> PeopleTech Systems Private Limited
> www.peopletech.co.in
>
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