Which component is used to interface a TTY with a telephone line?

Which component is used to interface a TTY with a telephone line?

• A. Acoustic Coupler
• B. Transmitter
• C. Charger
• D. Receiver

Answer: (A)

Interfacing a TTY with a telephone line is done with an acoustic coupler. This device sits over the telephone handset and converts the TTY’s digital signals into audio tones that travel across the phone line, and it does the reverse on incoming signals so the TTY can interpret them. It’s specifically designed to bridge the TTY and the telephone network using the handset’s microphone and speaker. The other options don’t provide that bridge: a transmitter or receiver alone aren’t the mechanism to couple the TTY to the line, and a charger isn’t related to signaling over a telephone network.

Interfacing a TTY with a telephone line is done with an acoustic coupler. This device sits over the telephone handset and converts the TTY’s digital signals into audio tones that travel across the phone line, and it does the reverse on incoming signals so the TTY can interpret them. It’s specifically designed to bridge the TTY and the telephone network using the handset’s microphone and speaker. The other options don’t provide that bridge: a transmitter or receiver alone aren’t the mechanism to couple the TTY to the line, and a charger isn’t related to signaling over a telephone network.