[Asterisk-Users] echo / delay problem

[Rich Adamson]

> > If you are outside the US, there isn't much you can do since the x100p
> > card was specifically designed to operate with US 600 ohm impedance
> > pstn lines.
> > 
> > If you have a x100p clone, it is likely the problem. Replace it with
> > something capable of matching the pstn impedance for whatever country
> > you are located in.
> > 
> 
> Loading wcfxo with option opermode=1 should select CTR21 mode, which
> according to wcfxo.c (in zaptel) should be used in Austria, Belgium,
> Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
> Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland,
> and UK. The default is to use FCC mode, which is used in the US.

The x100p does not have a programable chipset for impedance matching.
That parameter was intended for the TDM card.