[Asterisk-bsd] OSLEC on FreeBSD 8.1 w/ DAHDI

[Jerson Luiz de Paula Júnior]

I have a X101P on FreeBSD 8.1 but not configured:
dahdi_cfg -v
DAHDI Tools Version - 2.3.0

DAHDI Version: 2.3.0-rc2
Echo Canceller(s):
Configuration
======================


1 channels to configure.

DAHDI_CHANCONFIG failed on channel 1: Device not configured (6)

Anybody Help-me?

2010/8/7 Frank Griffith <glassdude45 at yahoo.com>

> *From:* Ian FREISLICH <ianf at clue.co.za>
> *To:* Asterisk on BSD discussion <asterisk-bsd at lists.digium.com>
> *Sent:* Sat, August 7, 2010 4:47:40 AM
> *Subject:* Re: [Asterisk-bsd] OSLEC on FreeBSD 8.1 w/ DAHDI
>
> "Kurt J. Lidl" wrote:
> > Has anybody gotten this to work?
> >
> > I'm contemplating buying hardware to interface to the PSTN,
> > and of course, the boards without hardware echo cancellation
> > are far cheaper than those with hardware echo cancellation.
> > If I don't buy something with hardware echo cancellation,
> > I'd like to know that the OSLEC software was working, or
> > at least close to it.
> >
> > There was some discussion about this back in Sept 2009,
> > but I never saw a real resolution to the problem.  Also,
> > that discussion was saying that it was only going to work
> > on amd64 based machines (whereas I have i386) and I'm
> > running 8.1, not 9-CURRENT.
>
> You have it the wrong way around.  OSLEC "works" FSVO works on i386,
> but not amd64.  The reason it compiles on i386 is that floating
> point math while banned from the kernel isn't specifically excluded
> by compiler flags like it is in amd64.
>
> That said, if you use OLSEC on i386, expect user space floating
> point corruption by the kernel because FP state is not saved on
> kernel entry.  So, while calls are in progress OSLEC will stomp all
> over user process FP math.
>
> Ian
>
> --
> Ian Freislich
>
> --
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> What's such a drag about this is that several years ago I had an
> X101P pci card working with my Asterisk server and it sent
> and received calls through my PSTN service without any
> troubles at all. There was no echo problems and it really,
> really worked, all with a card which only costs $15.
>
> But alas, some wiseguys took out the FXO module in
> zaptel port. I tried different things including loading Linux
> Fedora and DAHDI. That worked but it echoed like
> crazy with PSTN calls. By then the cable company was
> offering full VOIP service for only $19 per month. My
> Asterisk server has now being used as a VOIP server
> with a provider so my wife can call her family in Brazil.
> And I'm running that on a server which does not have an
> old PCI slot for the X101P card I still have. That's progress
> for you.
>
>
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