Digital Voice phones | BT Help
www.bt.com › help › landlineWith Digital Voice, it's best to use Essential or Advanced Digital Home Phones, which have been specially designed to use with the service. Digital Voice: Will my service work in a power cut? Your Hub needs power to make calls with Digital Voice. If your area has power cuts, you can buy a battery back-up unit (BBU).
BT Call Protect for Digital Voice User Guide
www.bt.com › content › damBT Call Protect for Digital Voice User Guide With your Call Protect service, we identify and add a list of nuisance callers who we’ll send straight to your junk voicemail, cutting down your unwanted calls. This is the BT Blacklist and is turned on automatically with your new service.