How does the Public Switched Telephone Network work?
PSTN uses circuit switching to allow users to make landline telephone calls to one another.
The call is placed after it is routed through multiple switches.
Ultimately, voice signals are able to travel over the connected phone lines.
What does a PSTN do?
The public switched telephone network (PSTN) is the aggregate of the world’s circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.
What is a PSTN connection?
PSTN uses an old technology whereby circuit-switched copper phone lines are used to transmit analogue voice data. It is the basic service that you have at home and in a small business. As a dedicated service, a PSTN line cannot be used for any other purpose while a call is being made.
What is the difference between PSTN and VoIP?
Public Switched Telephone Network (PSTN), on the other hand, uses circuit-switched telephony between two points for the duration of a call. It is the traditional telephone system that carries analog voice data via copper wires. VoIP uses the internet to connect but PSTN uses a landline.
Is PSTN analog or digital?
The PSTN is a circuit-switched network. Originally only an analog system, the PSTN is now almost entirely digital, even though most subscribers are connected via analog circuits, and it now includes mobile phones in addition to fixed-line phones.