The days of paying Telstra (or even Optus) charging exorbitant amounts per month for line rental and high call costs are over. There are new companies popping up every day in Australia who can help you save a lot of money in your phone calls. The biggest savings I have discovered recently are the costs to national phone numbers and mobiles. These calls are measured in 30 sec intervals by mobile carrier to make them look attractive, plus they have what they call a flagfall (cost to get the call connected). Not so with most VoIP providers.
The VoIP (Voice Over Internet Protocol) phone company that I use is MyNetFone and I am on their smallest plan. It is such a small plan that there is no monthly fee, it’s almost like a PrePaid Service. If you already have a broadband service you can purchase a VoIP phone adapter for less than $60 and take advantage of no monthly costs, untimed national calls for 12.5c and calls to mobile at 27c per minute (not per 30 seconds). Here is a list of the different plans that are made available by MyNetFone: https://www.mynetfone.com.au/residential-voip-solutions/service-plan-choices/
A great feature of this service is that you can have voicemails emailed to your email address and open them as an audio attachment, you can get a DID (Direct In Dial) number for any and every state of the year for only $30 each. You can sound like a national company and have all your calls answer in one place (even calls from New Zealand).
Finally, you can check on every single call that you have made for the last year or more. I checked back to April last year which is when I started using the service and every single call out that I made on the service was listed with the person I called and how much the call cost!
Maybe things will change as the company gets bigger, but this is some of the great news that is coming from the telecommunications industry with the advent of VoIP.