It indicates 'Incoming Call'All other features are functioning correctly.
BT4000 Big Button Single and Twin Additional Handset & Charger
BT4000 Big Button Cordless Telephone Nuisance Call Blocker Single Handset Boxed
BT4000 Big Button Twin Handset Cordless Duo & Nuisance Call Blocker / User Guide
BT4000 Big Button Twin Phones Call Blocker Boxed No Batteries Tested
BT BT4000 Big Button Cordless with Nuisance Call Blocker Pack of 2 - (069265)
BT4000 Big Button Nuisance Call Blocker Single Phone
