What system allows standard telephone users to easily initiate calls to TTY users?

The system that facilitates standard telephone users in initiating calls to TTY users is known as Relay Service. This service plays a crucial role in ensuring effective communication between hearing individuals and those who are deaf or hard of hearing using TTY devices.

With Relay Service, a third party, known as a relay operator, acts as an intermediary. When a standard telephone user wishes to communicate with a TTY user, they can call the Relay Service number. The relay operator then reads the message from the standard phone caller and types it out for the TTY user on the other end. Conversely, the TTY user’s responses are typed, and the relay operator reads those messages back to the standard telephone user. This process allows for seamless interaction between both parties, ensuring that important conversations can occur without barriers.

The other options like Voice to Text, Voice to Relay, and Text to Voice do not specifically describe the established system designed for this purpose. Voice to Text typically refers to converting spoken language into written text without the relay operator’s involvement. Voice to Relay and Text to Voice describe communication methods but do not encompass the interactive relay service concept specifically designed to assist standard phone users in contacting TTY users effectively.