What does the acronym PSTN stand for?

What does the acronym PSTN stand for?

• A. Public Switched Telephone Network
• B. Private Satellite Telephone Network
• C. Public System Telecommunication Network
• D. Personal Service Telecommunication Node

Answer: (A)

The term described is Public Switched Telephone Network. It refers to the global system of public telecommunication networks that deliver traditional landline voice calls. “Public” means it’s the openly accessible network operated by telecom operators; “switched” highlights circuit-switching, where a dedicated path is established for the duration of a call; and “telephone network” denotes the collection of exchanges, transmission links, and signaling that carry voice traffic between subscribers. This is the standard name for the legacy voice network that evolved to support modern dialing, number routing, and billing, and it contrasts with private networks or satellite or purely IP-based systems. The other options don’t match the established terminology: they misstate the public nature, the technology, or the naming convention used for this global phone system.

The term described is Public Switched Telephone Network. It refers to the global system of public telecommunication networks that deliver traditional landline voice calls. “Public” means it’s the openly accessible network operated by telecom operators; “switched” highlights circuit-switching, where a dedicated path is established for the duration of a call; and “telephone network” denotes the collection of exchanges, transmission links, and signaling that carry voice traffic between subscribers. This is the standard name for the legacy voice network that evolved to support modern dialing, number routing, and billing, and it contrasts with private networks or satellite or purely IP-based systems. The other options don’t match the established terminology: they misstate the public nature, the technology, or the naming convention used for this global phone system.