[asterisk-users] fxotune question

Sun Jun 8 12:39:34 CDT 2008

Matthew,

Nothing as serious as a broken email system.  I forgot to attach the
attachment.  Sorry about that.  Here it is.

Thanks,

John

On Sat, Jun 7, 2008 at 8:12 PM, Matthew Fredrickson <creslin at digium.com>
wrote:

> John Morey wrote:
> > I switch the wires in lines 5-8 (i.e. reversed tip and ring) and reran
> > fxotune to tune the lines.  fxotune.conf ended up looking exactly the
> same
> > as before the change.  Since I was expecting/hopping to see a change but
> did
> > not I switched everything back to the way it was. Is there a way to test
> the
> > lines, using a multi-meter maybe, to tell if the tip and ring are correct
> or
> > reversed?
> >
> > After putting things back I reran fxotune to get the verbose output. It,
> > foxtune.out.gz, is attached.  fxotune seems to have had a better time
> with
>
> It seems that one way or another the attachment didn't go through.  Can
> you email the tarball to me directly or post it to a website?
>
> Thanks,
> Matthew Fredrickson
>
> > line 7 during this run.  fxotune.conf now contains:
> >
> >    5=7,255,251,251,2,255,255,1,255
> >    6=7,255,251,251,2,255,255,1,255
> >    7=4,0,0,0,0,0,0,0,0
> >    8=7,255,251,251,2,255,255,1,255
> >    9=4,0,0,0,0,0,0,0,0
> >    10=5,0,0,0,0,0,0,0,0
> >    11=0,0,0,0,0,0,0,0,0
> >    12=0,0,0,0,0,0,0,0,0
> >
> > I tried calling directly into the lines above and it seems lines 5,6,8
> have
> > much more echo than lines 7,9,10. So just for fun I edited fxotune.conf
> to
> > the following and reloaded (fxotune -s) it:
> >
> >    5=5,0,0,0,0,0,0,0,0
> >    6=5,0,0,0,0,0,0,0,0
> >    7=4,0,0,0,0,0,0,0,0
> >    8=5,0,0,0,0,0,0,0,0
> >    9=4,0,0,0,0,0,0,0,0
> >    10=5,0,0,0,0,0,0,0,0
> >    11=0,0,0,0,0,0,0,0,0
> >    12=0,0,0,0,0,0,0,0,0
> >
> > Unless I am just spacing out the echo on 5,6,8 seems less now.  I really
> > have no idea what is going on.
> >
> > John
> >
> >
> > On Fri, Jun 6, 2008 at 1:31 PM, Matthew Fredrickson <creslin at digium.com>
> > wrote:
> >
> >> John Morey wrote:
> >>> Tilghman,
> >>>
> >>> Thanks for the pointer.  I'll check this tomorrow and let you know.
> >> Also, I would like to see the output without the "-d" flag and with the
> >> "-v" flag.  This will output a lot of data (the echo ratio for every
> >> possible coefficient setting it has tried per port).
> >>
> >> Matthew Fredrickson
> >>
> >>> John
> >>>
> >>> On Wed, Jun 4, 2008 at 11:18 PM, Tilghman Lesher <
> >>> tilghman at mail.jeffandtilghman.com> wrote:
> >>>
> >>>> On Wednesday 04 June 2008 22:02:19 John Morey wrote:
> >>>>> Hello,
> >>>>>
> >>>>> I've run fxotune at different times but continue to get what seem to
> be
> >>>>> strange numbers in /etc/fxotune.conf.  It ends up with:
> >>>>>
> >>>>>     5=7,255,251,251,2,255,255,1,255
> >>>>>     6=7,255,251,251,2,255,255,1,255
> >>>>>     7=7,255,251,251,2,255,255,1,255
> >>>>>     8=9,2,250,253,4,252,0,255,255
> >>>>>     9=4,0,0,0,0,0,0,0,0
> >>>>>     10=5,0,0,0,0,0,0,0,0
> >>>>>     11=0,0,0,0,0,0,0,0,0
> >>>>>     12=0,0,0,0,0,0,0,0,0
> >>>>> ports 5-10 have lines hooked up to them.  The first four lines seem
> >>>> strange
> >>>>> when compaired to what others have posted and what ports 9 and 10
> have.
> >>>>>
> >>>>> Also if I'm reading things right my echo ratios seem to be very
> >>>>> high.  Running "fxotune -d -b 5 -w 1004" gives the following:
> >>>>>     Dumping module /dev/zap/5
> >>>>>     echo ratio = 0.1759 (1960.0 / 11145.0)
> >>>>> Which I read to be over 17%.  This seems crazy.  Am I reading this
> >> right?
> >>>>> Where should I start to look for problems?
> >>>> You might check to see if the tip and ring are reversed in your
> wiring.
> >>>>  That
> >>>> can frequently cause weird echo problems.
> >>>>
> >>>> --
> >>>> Tilghman
> >>>>
> >>>> _______________________________________________
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> >>>>
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> >>>>
> >>>
> >>>
> ------------------------------------------------------------------------
> >>>
> >>> _______________________________________________
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> >>>
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> >>
> >> --
> >> Matthew Fredrickson
> >> Software/Firmware Engineer
> >> Digium, Inc.
> >>
> >> _______________________________________________
> >> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> >>
> >> asterisk-users mailing list
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> >>
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
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>
>
> --
> Matthew Fredrickson
> Software/Firmware Engineer
> Digium, Inc.
>
> _______________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
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