Your house is connected to the internet via an optic fibre. The expected minimum lifetime of this fibre is 60 years. The NBN is completely passive, all that lies between your house and the exchange is strands of glass and optical prisms, no power or ongoing maintenance is required.
Upgrading the speed of the NBN is simply a matter of replacing the equipment at each end of the fibre. Speeds exceeding 40,000 Mbps have already been demonstrated in research laboratories using the same type of fibre as in the NBN.
“We are absolutely confident that 25 megs is going to be enough, more than enough, for the average household” - Tony Abbott*
Your house is connected to a NBN node via existing copper wire. Each of the planned 30,000 nodes is a self-contained mini telephone exchange. These nodes have complicated internals that require regular maintainance and a reliable power source.
Your internet connection speed to the coalition's NBN is dependent on the distance of your house to the nearest node, the quality of your existing telephone line, and the quality of your home's internal copper wiring.
You have just received the digital copies of your wedding photos from the photographer. You're eager to upload them to Facebook for all to see. There are 100 high quality photos each 10MB in size.
The latest episode of HBO's Game of Thrones series has just been released, unfortunately your bus to work leaves in 5 minutes. You really wanted to watch a HD version of the episode during your commute! You quickly plug in your iPad and start the download. Will it finish in time? Or will you miss the bus?
You have just picked up the dog you've always wanted! You've recorded picking him up, his first arrival home, and him playing with his new toys. You've then edited these scenes into a video and want to upload it to YouTube. How long is it going to take before the world sees your bouncy baby?
You run an Engineering Consultancy from your home office in Brisbane. You are working on a detailed design for a Liquid Natural Gas train on Barrow Island for the Gorgon project. Your client's design office is in Perth and you want to send your latest design via Dropbox. The files are 300MB in size.