Martin Johnson explained on 10/05/2008 :[color=blue]
> Christian wrote:[color=green][color=darkred]
>>> My solution will be to get a Siemens C475IP or maybe the similar
>>> SNOM M3.[/color]
>>
>> To be honest, that is exactly what I did (an S450IP in my case). The
>> advantage of a real VOIP-phone rather than an ATA is that the sent and
>> received signal never meet each other on a single line. The only echo will
>> be caused acoustically in the handset. So the chance of echo on the far end
>> is reduced quite a lot. I never had any complaints about echo anymore (I
>> did have some with my SPA3000, although not often).[/color]
>
> I have a local PSTN number on my Gradwell VOIP service, so that PSTN callers
> in my own town don't need to dial an area code to call me.[/color]

Right, I've been reading this thread thinking you've got echo problems
on the PSTN side of the SPA3000.

What you're actually saying is it's a VoIP account that's suffering the
echo..[color=blue]
>
> After turning down the SPA3000 gain settings a while back, I _think_ I only
> now get complaints about echo from callers in my own town, as if BT's audio
> gain was higher for such callers. Is it possible that the audio gain in the
> BT network is routing-dependent, or is it more likely to just be coincidence?
>
> - Martin.[/color]