[Freeswitch-users] On-conference distortion for FreeTDM channels, but not SIP channels

Bob Hartwig bobjects at gmail.com
Thu Jan 2 19:27:42 MSK 2014


For what it's worth, this recording captures exactly what I addressed with
my dahdi_timer module.  That module won't work for Sangoma, of course.

To read a pretty detailed analysis of what the problem is, do a search of
messages from me on this list and on the freeswitch dev list around
September 2013.  I would volunteer to port that timer module to work with
Sangoma, but I don't have any Sangoma boards.  If Sangoma wants to send me
a PCIe board free of charge, and give me some guidance on how to derive the
8 KHz T1 clock via the equivalent of /dev/dahdi/timer (or however else),
I'll give it my best shot.  Otherwise, look at what I did in dahdi_timer.c.

    Bob





On Thu, Jan 2, 2014 at 8:10 AM, Melanie Treitinger <
treitinger at as-infodienste.de> wrote:

>  Hi Brian,
>
> I have attached an a-leg recording of a distorted conference where I play
> the freeswitch welcome message for testing.
>
> The recording is placed in the dialplan before the conference is created:
> <action application="record_session"
> data="/path/to/recording/test_distortion_${strftime(%Y-%m-%d-%H-%M-%S)}.wav"/>
> ...
> <action application="conference" data="${conference_command}"/>
>
> Hardware is a Sangoma ISDN card (as recommended...).
>
>
> Best Regards
> Melanie
>
> Am 29.12.2013 21:54, schrieb Brian West:
>
> What kind of distortions are you experiencing? On what hardware?
> --
> Brian Westbrian at freeswitch.org
> FreeSWITCH Solutions, LLC
> PO BOX 2531
> Brookfield, WI 53008-2531
> Twitter: @FreeSWITCH , @briankwesthttp://www.freeswitchbook.comhttp://www.freeswitchcookbook.com
>
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> iNUM: +883 5100 1420 9001
> ISN: 410*543Skype:briankwest
> PGP Key: http://www.bkw.org/key.txt (AB93356707C76CED)
>
>
>
>
>
>
>
>
>
>
>
>
>
> On Dec 17, 2013, at 10:42 AM, Melanie Treitinger <treitinger at as-infodienste.de> <treitinger at as-infodienste.de> wrote:
>
>
>  Hi Bob,
>
> thank you very much for your answer and the Dahdi patch (http://jira.freeswitch.org/browse/FS-5898).
> However we are using Sangoma and don't know yet how to adapt this patch for our cards.
> Does anyone know how to do this?
>
> Melanie
>
>
>
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