3)When the handset finishes registering, it shows
REGISTRATION COMPLETE in the display.
What if the display shows REGISTRATION FAILED? 
Repeat the process starting with step 1.
Resetting the Handset
If you want to register the handset to a different base or replace a handset with another one, you must first clear the registration information from the base and the handset.
) Press and hold [
] and [#] for at least five seconds, until the SYSTEM RESET menu appears.
) Select the DEREGISTER HS submenu by pressing [menu/ select]. WHICH HANDSET? appears in the display.
3) | Use [ | ] or [ ] to select the handset ID to be de- |
| registered from the list, and then press [menu/select]. | |
| DEREGISTER HS appears. | |
4) | Press [ | ] to move the cursor to YES, and then press |
[menu/select]. You will hear a confirmation tone.
Resetting the Handset Without the Base
If the original base this handset was registered to is not available for some reason (for example, it is lost or somehow incapacitated), you can still reset the handset and use it with another base.
) Press and hold [
] and [#] for at least five seconds, until the SYSTEM RESET menu appears.
) | Press [ | ] to move the cursor to BASE UNAVAILABLE and |
| then press [menu/select]. BASE UNAVAILABLE appears. | |
3) | Press [ | ] to move the cursor to YES, and then press |
| [menu/select]. You hear a confirmation tone, and the | |
| handset deletes its own link to the base without trying to | |
| contact the base. | |
Now you are ready to register the handset to the new base.