Why does a replacement cordless handset ring but drop the call when lifted?
Answer
This usually means the spare handset is not fully registered to the base. Power-cycle the base and handset battery, then re-register the spare using the base pairing steps for your phone system.
Follow these steps
Power down the spare handset and base
Remove the batteries from the spare handset. Unplug the main base from power. Leave both without power for about one minute.
You should see: The handset display is blank and the base has no power lights.
Restore base power first
Plug the base back in and wait until it finishes starting (status lights return to normal).
You should see: The base shows a ready or idle status.
Reinstall handset batteries and wait
Put the batteries back in the spare handset, place it on the cradle or charger, and wait about 30 seconds for it to sync.
You should see: The handset display returns and shows a handset number or signal to the base.
Register the handset to the base
Follow your system’s handset registration or pairing steps (often a base Find/Reg button plus a handset menu option). Complete registration for the spare handset.
You should see: The handset shows as registered to the base without a Line in use or unregistered warning.
Test an incoming and outgoing call
Have someone call the line, answer on the spare handset, then place a short outbound call.
You should see: The call stays connected after you lift the handset, and you can dial out normally.
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Extra tips
What to look for: Icons or messages such as Line in use, Not registered, or a blank/handset number that does not match the base after you lift the handset.
Before you change anything: Confirm the spare handset is the same brand/system as the base and was included with the original purchase. Note the handset number shown on the display. Have the base manual’s registration steps nearby if available. Do not discard the failed handset until the spare works.