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Difference Between PSTN and VoIP

PSTN vs VoIP

Summary: Difference Between PSTN and VoIP is that the public switched telephone network (PSTN) is the worldwide telephone system that handles voice-oriented telephone calls. Nearly the entire telephone network today uses digital technology, with the exception of the final link from the local telephone company to a home, which often is analog. While VoIP (Voice over IP, or Internet Protocol), also called Internet telephony, enables users to speak to other users over the Internet (instead of the public switched telephone network).

Difference Between PSTN and VoIP

PSTN

The public switched telephone network (PSTN) is the worldwide telephone system that handles voice-oriented telephone calls. Nearly the entire telephone network today uses digital technology, with the exception of the final link from the local telephone company to a home, which often is analog. The telephone network is an integral part of computer communications. Data, instructions, and information are transmitted over the telephone network using dial-up lines or dedicated lines. While

VoIP

VoIP (Voice over IP, or Internet Protocol), also called Internet telephony, enables users to speak to other users over the Internet (instead of the public switched telephone network). To place an Internet telephone call, you need a high-speed Internet connection (e.g., via cable or DSL modem); Internet telephone service; a microphone or telephone, depending on the Internet telephone service; and Internet telephone software or VoIP router, or a telephone adapter, depending on the Internet telephone service.

VoIP services also are available on some mobile devices that have wireless Internet service. Calls to other parties with the same Internet telephone service often are free, while calls that connect to the telephone network typically cost about $15 to $35 per month.

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