The ring main is both the source of power and transfers the signal from the base unit to each slave unit.
BT 6500 Cordless Phone with Answering Machine & Nuisance Call Blocker
BT 6500 Cordless Phone Main Charger Base 066267 066268 066269 UK FREE P&P #206
BT 6500 Cordless Phone Cradle & Power Lead 066267 066268 BT6510
BT 6500 Cordless Telephone with an integrated Digital Answering Machine
BT6500 BT 6500 Cordless Telephone With Nuisance Call Blocker & Answering Machine
BT 6500 Cordless Phone Replacement / Spare Main Base Unit and Phone NO CHARGER
