ION can only be used with the delivered DECT USB stick and cannot be registered to any another base. No handset can be registered to the DECT stick.
If you need to replace ION, or DECT stick you can register old ION/stick as follow:
- Put the ION dongle in the PC, during the first minute a device can be registered
- On the ION handset press the Speaker(key 5)+ Mute(key 9) at the same time
- Ring LED will blink quickly, handset is in registration mode
- Handset registration can take up to 1 minute