Once you acquire a TPG NBN FTTN service, you cannot go back to the TPG ADSL services. Another restriction is you cannot cancel either one of the data or voice services with cancellation of any one leading to cancellation of both.
The digital voice services are priced at 25 cents per call for local calls. National calls to landlines are also the same price as local calls but also include a 39-cent call connection charge. Calls to standard Australian mobiles cost 39 cents per minute and also have the call connection charge of 39 cents.
The minimum upfront charge includes $29.99 fee for the first month, digital voice prepayment of $20, setup fee and equipment delivery fee.