Emergency calls from a landline during a power failure, are, at the moment, possible. After the Digital Voice rollout will this still be possible, if I do not have a mobile? If I did have a mobile, how long would the service last if the power outage was lengthy?
If there is a power cut your Digital Voice service will not work and that includes for emergency calls. You would need some form of battery back up in order to keep the BT hub functioning.
If you presently use a cordless phone it would be the same during a power cut because the base station for the cordless phone would be without power.
If you get a mobile phone, assuming you keep the battery charged, depending on the size of the battery it will last at least 24 hours.
@man001 Duration of back-up power at mobile phone base stations varies, and may run out long before your handset battery is exhausted. More detail on this at https://bt-digital-voice.blogspot.com
@man001 Although I'm not on DV yet I now keep an ANKER PowerCore Essential 20000 in the house. It'll charge a mobile up three or four times. It can be carried on holiday if needed as well.