Phone Keeps ringing when I pick it up on Iaxy

Hi

Got one of the new Iaxy boxes and finally got it provisioned well I think I have. The blue light is on permanently and then orange one flashes every 30 seconds or so.

I am using this in the UK to phone the US and have attatched an analogue phone to it using an RJ11 cable from the Iaxy to the the phone.

However when I pick it up I dont get a dial tone but the phone sounds like it ringing one continuios ringing tone until I place it down again.

Any ideas what could be wrong?

Thanks

Roy