The CapTel 840i connects to both your telephone service and to your Internet service. Every time you make a telephone call, the phone uses the Internet connection to access a free Captioning Service. An operator at the Captioning Service uses voice recognition technology to generate captions of everything your caller says, and sends the captions back to your CapTel 840i phone.
You can enjoy conversations over the phone with the added help of written captions in case you miss anything.
NOTE: The CapTel 840i phone does not generate captions of the phone call on its own. The phone works with the Captioning Service (over the Internet) to display captions during your calls.