DECT handset won't register

Fix registration failures.

Registration needs the base in registration mode at the same time.

Steps

  1. Hold the base button until the registration light flashes, then register within a minute or two.
  2. Check you're entering the right base PIN (default 0000).
  3. De-register the handset from its old base first if it was used elsewhere.
  4. Check the base hasn't reached its handset limit.
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