What is the difference between PSTN and VoIP?
PSTN stands for Public Switched Telephone network which is the technology in use for over 100 years now and VoIP stands for Voice over Internet Protocol which has been around for more than a decade. PSTN is the traditional service that you have in your home from your local telephone service provider such as Telstra or Optus. With a PSTN based network you are not required to have any internet connectivity in order to make phone calls because it is a circuit based network and your call from your phone to the destination phone will be handled purely on circuits through your telecom provider. But in the case of Voice over IP your call is traveling to the destination through your existing internet connection. With the invention of high speed internet technology for the home it is very easy for you to take advantage of this broadband and use internet telephony – VoIP.
