Christian wrote:[color=blue][color=green]
>> 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.

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.