no sound when called?

[casch]

Hi,
it happens and it is quite nasty, of course.

I got a call: VoipDiscount -> Voxalot -> myAta:
- myAta shows the nuber that calls me,
- I pick up the phone and
- nothing but silence.
Neither I hear anything nor the one who calls me

Sometime, the caller hooks on and calls again and then the call is without problems.

I have no problems if I myself do phone calls.

So I guess it is not a problem of my settings.

I just had the situation, right before I called back:
21-09 08:26:25 08:28:18 00435050532168 00:01:53
(Unfortunately incomming calls are not listed - why not?)
I was called from exactly this number: 00435050532168.

The log of my Ata shows both calls:
21.09.11 09:25 00435050532168 Fon-F 305234 0:01
21.09.11 09:26 00435050532168 Fon-F 305234 0:02
(All are Euro-Time = GMT+2 at the moment)

Can you please figure out why somtimes Voxalot does not establish a 'sound-connection' and correct this?
PLEASE!

Regards,
Carl