Long distance telephone networks shall not be used for which type of transmissions?

• A. Data transmissions
• B. Voice transmissions
• C. Emergency transmissions
• D. Broadcast transmissions

Answer: (A)

Data transmissions require steady, high-bandwidth, packetized delivery with error handling and low latency. Long distance telephone networks are designed as circuit‑switched paths optimized for voice, not for the bursty, data‑packet traffic, which makes data transfer slow, unreliable, and harder to secure on those circuits. Because of this mismatch, data should be routed over dedicated data networks or modern digital/packet‑switched facilities that can provide the reliability, speed, and security data needs. Voice transmissions align with the intended use of these networks, emergency voice communications can ride the same circuits with priority when available, and broadcast typically relies on other infrastructures better suited to one‑to‑many transmission.