General Switched Telephone Network

What Does General Switched Telephone Network Mean?

The general switched telephone network (GSTN) is the international public telephone networks which comprise the national Public Switched Telephone Networks (PSTNs) and all the technologies and facilities that interconnect them.


Techopedia Explains General Switched Telephone Network

The GSTN is an encompassing name for the various types of telephony networks being used around the world. It includes Asynchronous Transfer Mode (ATM), Public Switched Telephone Networks (PSTN), Integrated Services Digital Networks (ISDN), and all wireless networks and private networks.

It also includes all of the interconnecting facilities that connect these networks. The term is rarely used outside of ITU-T papers, with PSTN being the term widely used to refer to telephony networks. Even as the term gained wide usage, it was still used to refer to the US PSTNs, instead of referring to the international connectivity of these networks.

Since GSTN refers to generally all of telecommunication networks, some of its sections are used for VoIP, Digital Subscriber Line (DSL), and many other internet-based networking infrastructure and technologies as well as being directly connected to most IP networks.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…