This Adapter allows you the freedom to keep using your existing home phones when your service moves to Digital Voice. If your current home phone is a DECT Cordless phone, with or without additional handsets, you will only need 1 Adapter. If you only use Corded phones in your home, you will need an Adapter per phone. (You can have up to 5 Digital Voice products registered to the Smart Hub 2, this includes the Digital Voice Adapter) **You require an adapter if:** - You want your DECT phone in a different location to your Smart Hub. You\'ll only need 1 Adapter - You use Corded phones around your house. You\'ll need an Adapter per Corded phone **You do not need an adapter if:** - It\'s convenient for you to plug either your Corded or Cordless phone directly into the green port at the back of your Smart Hub 2.