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List:       hylafax
Subject:    Re: [hylafax-users] t38modem, Was: faxing over sip
From:       Steve Underwood <steveu () coppice ! org>
Date:       2007-11-24 19:55:04
Message-ID: 47488198.5030105 () coppice ! org
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Hi,

Lee Howard wrote:
> Robert Moskowitz wrote:
>
>>> t38modem 1.0.0 (in the OPAL project) supports both SIP and UNIX98 
>>> ptys. So... if that code can ever make it out of CVS/SVN then 
>>> there's no patching of kernels required.
>>
>> This is VERY encouraging. But without an RPM for RHEL/Centos, I am 
>> not going to see it soon. Unless the Trixbox team take on the 
>> building of the RPM (as they have for spandsp).
>
>
> Well, Vyacheslav Frolov (the t38modem author) seems to have 
> disappeared for the moment (I guess it's been a few months now, at 
> least).  However, a number of people with whom I am acquainted are 
> using t38modem 1.0.0 in live, large production use, and they're 
> adequately pleased with it.
>
> Over the past month or so I've been working with a T.38-using national 
> telco to try to evaluate their service, and I've been using t38modem 
> 1.0.0 to do that.  It's been a rocky road thus far (partly due to the 
> telco's internal inefficiencies - partly due to my inexperience with 
> t38modem in production use), however, if things eventually go well I 
> may end up using it on a large scale.
>
> If that happens, then I'll continue to push the OPAL maintainers to 
> coordinate a release of OPAL, ptlib, and t38modem that all work 
> together.  Once that happens you *should* see RPMs appear in time, and 
> if not then I would likely put them together myself.  Until then it's 
> a bit tricky to get going as it requires specific-dated code from 
> OPAL's new SVN repository (at Sourceforge, if I remember right).
>
> Thanks,
>
> Lee.
How happy you are with any T.38 implementation is going to depend a lot 
on what other implementations you talk too. As we test with more and 
more boxes, I find them very quirky. You need to record exact revisions 
of the firmware in use when logging a combination of kit as compatible. 
Newer revisions are far from guaranteed to be an improvement. :-)

Steve


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