[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.
> >
> 
> Ok, maybe it isn't programmable, but there seems to be two different
> DAA's used in the clones[1]. Si3012 for the US market and Si3014 for the
> global market. I assume this has to do with the line interface. I
> bought a clone in Sweden that has the Si3014. It should support the line
> impedance used in Sweden I think, since it's marked with the following label:
> 
>   Clas Ohlson AB
>   Modell/Malli: AMI-IE92 Art.nr/nro:32-2055
>   CE
>   For use in Sweden, Norway and Finland.
>   To be connected to the public switched telefone network.
>   Hereby, Clas Ohlson, declares that this modem is in
>   complience with the essential requirements and other
>   relevant provisions of Directive 1999/5/EC.
> 
> [1]http://www.intel.com/design/modems/linecard.htm

So, does that apply to the OP (I think he posted from Germany, but
I could be wrong)?