If you encounter any issues with your cordless phone handset, or it does not recognize it's base, or you want them to be recognized by only one base, you can reset your Uniden phone in a few easy steps.
Disconnect the Battery
Press and hold the Star * and Pound # Key
Reconnect the battery while holding down both keys
Wait for a long beep.
The phone will now register itself to the new base, and the handset has been restored to factory default settings.