Public switched telephone network - Wikipedia
The public switched telephone network (PSTN) is the aggregate of the world's telephone networks that are operated by national, regional, or local telephony operators. It provides infrastructure …
The Public Switched Telephone Network (PSTN): How It Works …
Mar 18, 2025 · The PSTN is a vast network of physical wires, switches, and circuit-switched systems that enable voice calls and fax communication over long distances. It is the …
What Is PSTN and How Does It Work? - Nextiva
PSTN is a complex network encompassing telephone lines, fiber optic cables, switching centers, cellular networks, satellites, and cable systems. Put simply, when you dial a phone number, …
What Is PSTN & How Does It Work? A Complete Guide
Jun 12, 2024 · The Public Switched Telephone Network (PSTN) is the traditional global network that facilitates landline telephone communications. Initially developed in the late 19th century, …
PSTN vs VoIP: Cost, features, and transition options - Telnyx
Aug 26, 2025 · As mobile network operators transition their infrastructure to run completely on VoIP, the PSTN will remain in effect. This article explains how the PSTN works, its benefits …
What Is PSTN and How Does It Work? A Guide for 2026
Nov 12, 2025 · What is PSTN? PSTN stands for Public Switched Telephone Network, and it’s the traditional landline telephone system that’s been around for more than a century. It is a …
What Is PSTN? Meaning, How It Works, and Key Uses Explained
Dec 22, 2023 · The PSTN, also known as the Plain Old Telephone Service (POTS), is a traditional network of connected phone systems using physical infrastructure like telephone …
PSTN Basics: Understanding the Public Switched Telephone Network
PSTN stands for Public Switched Telephone Network. It’s essentially the traditional circuit-switched telephone network that’s been around for ages. Telephone lines are connected to …
What Is PSTN and How Its Work? Why VoIP Is Better
PSTN stands for Public Switched Telephone Network. It is the traditional circuit switched telephone system used for landline calls. PSTN connects telephones around the world using …
What Is the Public Switched Telephone Network (PSTN)? - OnSIP
Discover what the Public Switched Telephone Network (PSTN) is, how it works, its circuit-switched roots, how it compares to VoIP, and why many businesses are moving away from it.