Who needs to plan ahead?
The equipment question changes if another device uses the telephone line or the landline is your dependable way to make calls.
Households with alarms or telecare
If a care alarm, health pendant, security alarm or another device connects through the phone line, tell your phone provider before migration. Ask the device supplier what must happen to that specific device before the analogue service changes.
Homes with limited mobile backup
If a mobile phone is unavailable or reception at home is unreliable, discuss how you will make calls during a power cut or broadband failure. Handset compatibility alone does not settle that question.
Home-phone users awaiting instructions
If you mainly want to keep using your home phone, check your provider’s migration notice before replacing the handset. The provider can tell you whether your current phone can connect to its router or whether it will arrange an adaptor or other equipment.
What should you check before buying?
Identify anything else connected to the line and any need for calls during outages, then confirm the phone connection and equipment with your provider. An existing handset may be usable even when a connected alarm needs separate arrangements.
| Concern |
What to check |
Who this matters to |
| Connected alarms and telecare |
List every device using the line, notify the phone provider and ask each device supplier whether that exact device needs an approved adaptor, replacement or alternative connection. |
If my pendant or alarm uses the line, a working phone after switchover would not tell me whether the device can still communicate. Around 40% of consumers put connected-device protection first. |
| Calling during disruptions |
Tell the provider if mobile calling is not a workable backup. Confirm what its power-backup arrangement supports and how you would make calls if broadband itself fails. |
Without a usable mobile alternative, I need a calling plan for power cuts and broadband faults. Around 40% of consumers place calling continuity first. |
| Phone setup |
Confirm your migration date, whether the existing handset or cordless base can connect to the service, and which router or adaptor the provider will arrange. |
I want to keep using my home phone without buying equipment that does not match my provider’s connection. Around 20% of consumers make straightforward setup their main concern. |
Relevant providers for reference
These providers illustrate why migration equipment and timing must be checked against the household’s own service. Their arrangements are not interchangeable.
BT
BT’s Digital Voice migration is relevant to households using its service on the BT Openreach network.
- BT says it checks whether customers need additional Digital Voice equipment and can provide a compatible hub or an adapter where the phone cannot be placed near the hub.
- BT says Digital Voice calling stops if power or broadband fails. Its stated Battery Back Up support of at least one hour applies to specified BT equipment, not automatically to a third-party alarm.
Virgin Media O2
Virgin Media’s digital home-phone change uses its Hub and account-specific switchover instructions on its own network.
- Virgin Media says it sends affected customers a switchover date, an adaptor and instructions for connecting the telephone cable to the Hub.
- Virgin Media says home-phone calling will not work during a power cut or a fibre-network disruption until service is restored. The BT Openreach retirement date is not its network’s switchover date.
TalkTalk
TalkTalk describes Digital Voice for its Full Fibre service, using its Wi-Fi Hub or a compatible adapter arrangement.
- TalkTalk says an existing home phone can connect to the Wi-Fi Hub; its Digital Voice Adapter guide also describes connecting a compatible phone through its supported broadband equipment.
- TalkTalk says Digital Voice does not work when power fails. It describes backup support for customers without mobile signal, but the arrangement for a particular account and any connected alarm needs confirmation.
KCOM
KCOM is relevant to households in its regional service area as it updates copper services to fibre-based landline delivery.
- KCOM says it will contact affected customers in advance with details of their migration.
- Ofcom’s August 2026 consumer guidance does not assign KCOM the BT Openreach retirement date. Follow KCOM’s notice for the timing and equipment needed on your service.
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Common questions
Does 31 January 2027 apply to every UK landline?
No. Ofcom says BT plans to retire its old landline network by 31 January 2027 for services using the BT Openreach network. Its August 2026 consumer guidance says operators with their own networks, including Virgin Media O2 and KCOM, also plan to retire old networks but had not set equivalent dates. Follow the notice from your own provider.
Should I buy a new handset before my provider contacts me?
Ask the provider what your service needs first. Ofcom says some customers may need a router, adaptor or handset, while provider guidance describes arrangements that can use an existing phone or cordless base. Confirm your handset’s connection and any equipment the provider will arrange before replacing it.
Can my current phone stay plugged into the old wall socket?
For a migrated digital service, expect to connect the phone as your provider instructs rather than assume the old wall socket will continue carrying calls. Ofcom describes digital phones connecting through a broadband router; Virgin Media instructs affected customers to connect their telephone cable to its Hub using its supplied adaptor.
Will an alarm work if my phone has a digital dial tone?
A digital dial tone does not confirm alarm or telecare compatibility. Tell your phone provider about the device before migration, then ask the alarm or telecare supplier whether that exact model needs a different connection, approved adaptor, replacement or backup arrangement.
Can I make calls during a power cut?
Do not assume a standard digital-voice setup will make calls during a power cut. Ofcom says internet-based phone equipment needs specific backup to work when power fails, and BT says its Digital Voice service cannot make calls, including 999 calls, when power or broadband fails without an alternative. If mobile calling is not dependable at home, ask your provider what arrangement it supports and which parts of your setup it covers.