Tim wrote:[color=blue]
> damn-it wrote:[color=green]
>>
>> Any good alternative provider you can recommend?
>>[/color]
>
> It is nothing to do with voipfone.
>
> And nothing to do with the Snom phone.
>
> It is a deficiency in the SIP/RTP protocol.
>
> Mute means one way audio. If the RTP sequence rolls over while you are
> on mute, you lose the call.
>
> I think. Could be other things too.
>
> If you could get a pcap/ethereal trace of when the call drops out, I'd
> know for sure.
>
> Tim
> (been to the pub, so I don't guarantee the above answer)[/color]

Very interesting point. This is mentioned here as well:
[url]http://www1.ietf.org/mail-archive/web/sip/current/msg09638.html[/url]

So beer is fine...

JM