That sounds about right. I've had the old base for years so I guess it's an old software version. Will speak to the B&O shop. Thanks for your help everyone! Will let you know how I get on!

I just bought a Mark II, having had a Mark I working fine for several years. I managed to register the Mark II with my pyramid base, but when I try to use it to dial out or pickup an incoming call, the display shows "Line is Busy" and I hear a series of beeps in the earpiece. I've checked the wiring to the base - it works fine with the