BT Quartet 1500 - Manual (Page 36)

36 Base settings
Reset if you have forgotten your PIN code
1. Press and hold to switch the handset off and remove
the handset batteries, see page 14.
2. Press and hold as you replace the batteries. Wait
until the display shows DEFAULT .
3. Press to confirm. After a few seconds the base will
beep and the handset and base will reset.
Menu
R