When NBN reaches your location, your old PSTN landline will be disconnected. When this happens you can port your landline to a VoIP service that runs over an NBN Internet service. However if you don't want an Internet service, you can choose a landline replacement telephone that incorporates a mobile SIM. This lets you keep using a regular telephone with your current phone number without the need for an Internet connection.

Many users choose to keep their landline when their PSTN service is disconnected by NBN Co. That allows family, friends or customers to continue to reach you on your current number. However an increasing number of people are now choosing to cancel their landline and use their mobile phone instead. With many low cost mobile plans that include calls in Australia, this can be a cost effective and convenient option.

Keeping your existing PSTN landline number is easy. You can port your service to VoIP which works the same as a traditional PSTN service but uses the Internet instead of a dedicated copper wire to your home or business. Once you've ported your number to VoIP you'll need a VoIP capable telephone or an ATA which allows you to use your current phone by converting from VoIP to the PSTN standard.

You'll need to contact a VoIP service provider such as Buroserv, who will manage everything for you. Your VoIP service provider will port your number to VoIP and advise you whether you need any additional equipment such as a VoIP phone or ATA (to convert from VoIP to PSTN).

Both a VoIP telephone service and a PSTN landline service do much the same thing, but the technology they use is quite different. A PSTN landline service uses a dedicated pair of copper wires to connect your home or business to a local telephone exchange. With VoIP, no dedicated phone line is required. Instead, telephone calls are transmitted over the Internet.