[asterisk-users] fxotune question

Tilghman Lesher
2008-06-05T03:18:22Z

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