I just recieved an ATA 486 from Just Dial VOIP service. I got it all\nsetup last night and now can make calls perfectly with it, in fact some\nppl saying it sounds better than the mobile :-). But got a problem.\nWhen they try and call me back on a BT landline they get a message\nsaying "there is a fault." Or if they call from a VOIP / mobile\nservice they get a constant deadtone. Is there a reason they can't\nmake a call to me like I need to open some ports or something? Or is\nit down to Justdial number not comission yet?