BT digital voice adapter. See photos for specification. Full working order.
BT Digital Voice Adapter Phone Range Extender Only Works With BT And EE Digital Voice Service
BT Digital Voice Adapter V2 Only Works With BT and EE Digital Voice Service
1 PCS RJ11 to BT Socket Adapter,bt digital voice adapter Phone to Ethernet - ...
RJ11 to BT Socket Adapter, BT Digital Voice Adapter Phone to Ethernet Connector
BT Digital Voice Adapter - Model X16-G90 Item 100121 - For Digital Home Phone
