How does IP CTS work?

IP CTS, or caption phone service, lets people with hearing loss speak during a phone call and then read captions on a specialized device when the other person responds.

Cutting-edge speech recognition technology, along with skilled transcribers, is used to provide this live service. And users get real-time, accurate transcriptions of conversations on their phones, which can be vitally important when users speak with health care providers, emergency responders and others.

Users pay no direct fee for this service and it is provided by a small number of authorized IP CTS providers. Service is supported by a fund administered by the Federal Communications Commission.

An infographic of how IP CTS, or caption phone, services work.