ATA to replace SPA-3000?

TheFug

Martin Johnson schreef:
> Christian wrote:
>>> My solution will be to get a Siemens C475IP or maybe the similar
>>> SNOM M3.
>>
>> 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).
>
> 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.

You turning down the audio gain, makes BT turning it up ?
isn't there a call-smart setting possible in your situation ?

--
Bedankt, Thanks,

The Fug.

VoIP/SIP switched by:
(A free service sponsored by )

Martin Johnson

Jono wrote:
> Martin Johnson explained on 10/05/2008 :
>> Christian wrote:
>>>> My solution will be to get a Siemens C475IP or maybe the similar
>>>> SNOM M3.
>>>
>>> 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).
>>
>> 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.
>
> 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..

Yes, since I mostly only use the VOIP account.

In fact, the echo is much worse on calls to the analog BT line, but I
only give out the VOIP number.

Jono

Martin Johnson used his keyboard to write :
> Jono wrote:
>> Martin Johnson explained on 10/05/2008 :
>>> Christian wrote:
>>>>> My solution will be to get a Siemens C475IP or maybe the similar
>>>>> SNOM M3.
>>>>
>>>> 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).
>>>
>>> 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.
>>
>> 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..
>
> Yes, since I mostly only use the VOIP account.

I've got a couple of SPA3000s. Both are acting as PSTN trunks on my PBX
and also as regular ATAs.

I get the old echo on PSTN calls but not on VoIP calls.

>
> In fact, the echo is much worse on calls to the analog BT line, but I only
> give out the VOIP number.

Frustratingly so.

Martin Johnson

Jono wrote:

>> Martin Johnson explained on 10/05/2008 :
>> In fact, the echo is much worse on calls to the analog BT line, but I
>> only give out the VOIP number.

> Frustratingly so.

Well, at least it's not just my one that does that ;-)

Now that I've found the "more echo cancellation" tickbox in the v3.x
firmware, I will wait and see whether that solves or reduces the
problem. I did have one PSTN call earlier, and it seemed OK, but then
the thing always seems a bit intermittent.

Cheers,

- Martin.