How to register the Panasonic KX-TGA 850 Additional Handset:
Please be advised that you will need to manually register this handset to your phone's base station, which can be done by following the instructions provided below:
1. Press and hold the paging button on your answering machine base for 5 second (this is the button with a dot and some waves coming out of it)- . The base should start beeping.
2. On the additional handset you have received from us, please press the middle silver button in the middle of the navigation key, followed by #130.
3. If the handset asks you for a base PIN please enter 0000 and confirm with OK.
4. The phone should now be registered.