The PSTN (Public Switched Telephone Network) is the world’s circuit-switched phone networks. They are typically operated by either local, regional, or national telecommunications carriers. Put simply, it is the building block for all public telecommunications and what makes it possible for phones to call one another. The PSTN is made up of phone lines, phone cables, transmission links, etc. So why are people moving away from it towards newer technologies like SIP Trunking?
While PSTN was great for many years, it is now becoming challenging and costly to maintain and update the old equipment. The future lies in technologies like SIP Trunking. This means that carriers have no longer have an interest in investing in a fading technology like PSTN. Furthermore, users are more and more shifting to digital voice services. This only drives up prices for those users that haven’t yet switched.
So, what is SIP Trunking? Rather than using physical wires and cables for communications, it works off of the Internet. Multiple users can share lines, as opposed to PSTN (one user, one line). Simply put, the lines are virtual instead of physical.
SIP Trunking has multiple benefits. For example, with SIP you merge your voice and data onto a single IP network. This instantly saves you money off of your monthly phone bill. Another benefit from using virtual lines is that if you want to add more, you only have to use the Internet. In the past, you would have had to physically add new lines which is easier said than done.
You also get features with SIP that don’t come with older systems. For example, with SIP Trunking, you can make unlimited local and long-distance calls without worrying about your phone bill.