BT's Digital Voice (DV) is a telephone service delivered via a broadband hub, such as the BT Smart Hub 2. This version of hub is the first to include DECT wireless ports.

Openreach filtered master socket showing the broadband connection plugged into the top socket.
The lower PST socket is no longer used once didgital voice is activated.

A separate 'dongle' filter is not required.

Rear of  BT Smart Hub 2.

Sockets left to right are: Broadband input, hardwired phone socket, USB, Gig Ethernet ports out, power lead in, on/off button. Far right centre is 'pair device' button.

A remote DECT mains adaptor.

'Pair device' button on right side.

The steady glowing green light is to confirm that the unit is on, and paired with the Smart Hub 2.

A corded phone is plugged into a PST type socket on the top of the unit.