As a customer with poor broadband efficiency and very little mobile phone signal how much reliance can we place on digital switch over for phone calls?
DV requires a very small amount of bandwidth so your phone on DV should work ok
It's a nightmare. Mobile signal in my home is sketchy at best. My phones haven't worked with digital voice - one does, the other 2 don't. The BT staff on the helpline literally said there's no hope in a power cut. I