A voicemail system (also known as a voice message or voice bank) is a computer-based system that allows users and subscribers to exchange personal voice messages; to select and deliver voice information; and to process transactions relating to individuals, organizations, products, and services, using an ordinary phone.
You may think VOIP is a dead protocol, but all these video conference protocols we use, such as Zoom, Google Meet, Skype, Discord and so forth are based on the VOIP protocol. IP phones are quite common in business still. If you have NBN and a home phone it is almost certainly a VOIP phone. So VOIP is very much alive and kicking.
eftpos is a domestic payments network that facilitates the transfer of funds electronically when debit or some credit payments cards are used at the point-of-sale. As of recent years, eftpos now also allows NFC technology (tap and go, contactless payments), much like Mastercard and Visa.