HomeBusinessWhat Is Public Switched Telephone Networks (PSTN)?

What Is Public Switched Telephone Networks (PSTN)?

What is PSTN? PSTN stands for Public switched telephone network and is the infrastructure and VoIP service provider for public telecommunications. It is composed of all the circuit-switched telephone networks in the world, and is operated by local, regional, and national telephony operators. This article will explain what PSTN is, how it works, and what PBX is. We’ll also talk about multi-channel trunked lines.


The Public Switched Telephone Network is a global network of circuit-switched telephones that provides infrastructure and services for public telecommunication. It is comprised of the network systems of national, regional, and local telephony operators. Public switched telephone networks provide services to all kinds of users around the world. Using public switched telephone networks, people can connect to each other in a wide range of ways, including voice and data communications.

Traditionally, phone calls have passed over copper wires. The PSTN provider had to join the wires to connect two telephones. However, this process has become automatic, with voice signals sharing the same wire as other phone calls thanks to fiber-optics. PSTN lines also connect computers to the internet, but at a much slower speed than dial-up networks. But with the evolution of technology, many features have been added to public switched telephone networks.

General switched telephone network (GSTN)

The public switched telephone network (PSTN) provides the infrastructure and services for public telecommunication. It is an amalgamation of circuit-switched telephone networks around the world, and is operated by local, regional, and national telephony companies. Its primary function is to provide connectivity for calls made and received by users. But there are many other reasons that PSTN is so popular. To learn more about the history of PSTN, read on!

Despite this widespread use, the range of services offered to fixed and mobile subscribers has not increased in recent years. While advanced call-handling services such as call-waiting and call-forwarding are commonplace, subscribers to GSTN have limited access to such services. On the other hand, subscribers to packet-switched mobile networks and broadband networks can access advanced services such as IM and P. However, GSTN subscribers do have the option of using other services on the network.



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