change over to digital voice

[stubond]

How long after the engineers site visit to change from copper wire to digital voice should I have a working phone line

[shakey1981]

they so this remotely assuming your dont have extra needs normally at 12AM 

and need open reach help to setup and are not classed as a vulnerable person on there system 

https://www.bt.com/help/landline/digital-voice--how-do-i-set-up-my-service-

[WSH]

I seem to recall mine went through by midnight the same day, but it's been about four years now so I might be mistaken.

I take it you're aware that the phone now has to plug into the green phone socket on the back of the Smart Hub 2 and not the wall socket?

[chrisjp]

"How long after the engineers site visit to change from copper wire to digital voice"

Assuming you're not also being upgraded from Fibre to the Cabinet to Fibre to the Premises at the same time as your migration to Digital Voice, then changing your phone service to digital voice does NOT require any engineer visit. It is all done at the exchange, and digital voice comes to you over the same copper wire that the analogue phone service did.
You'll know it has taken place when your phone, plugged into the wall socket, loses its dial tone. You then remove the cable from the wall socket and plug it into the green socket on the back of your SmartHub 2 (or 3). You'll then get an "interrupted" dial tone which tells you there's a message on your free voicemail. Key 1571 to listen to this - it'll be BT's "Welcome to Digital Voice" message. After that your dial tone will revert to normal.

[shakey1981]

if your want to move your phone to different place not where the router is you will need an adapter BT digital voice adapter ask customer services if you can get one for free

dont worry if your on BT broadband an get an EE branded one they all work the same]