If you encounter an error while trying to pair a new accessory with your Ooma Telo, it may be due to a conflict between an existing accessory and the one you are trying to pair. Telos that have already been synced with an Ooma Telo Handset (the first-generation model of the Ooma Telo Handset) cannot pair with newer Ooma devices.

The Ooma Telo Handset is not compatible with the Ooma HD3 Handset, Ooma HD2 Handset, Ooma Linx devices, the Ooma Safety Phone, or Ooma Home Security sensors. If you would like to update your Telo to pair with newer devices, please note that your Ooma Telo Handset will no longer work.

The instructions below will guide you through changing the registration mode for your Ooma Telo:

  1. Use an Ethernet cable to connect your computer’s Internet port to the HOME NETWORK port on the Telo (note that the computer you connect will no longer be able to access the Internet)
  2. Give your computer a moment to receive an IP address from your Telo
  3. Open a web browser on your computer and navigate to either http://setup.ooma.com or
  4. Click dect on the left-hand navigation menu
  5. Choose the option for HD3 Handset, HD2 Handset, Linx, and Safety phone, and then click Change Mode, as shown in the image below: change mode
  6. Return your Telo to its previous configuration within your network and allow it to boot up

Once you have completed these steps, you can follow the instructions that came with your device to pair it with your Ooma Telo.