Getting started
Deregister all handsets
NOTES:
1.If the deregistration process is not successful, you might need to reset the system and try again. To reset: pick up the handset and press 
PHONE/FLASH, then press 
OFF/CLEAR and place the handset back into the charger. You can also reset the telephone base by unplugging the power from the telephone base and plugging it back in.
2.To
11
