But Australia recently slipped three spots to place 62nd in global broadband rankings, with our average download speed of 35.11 Mbps far below the global average of 57.91 Mbps.
Labor has ruled-out a large scale upgrade of the NBN if it wins the 2019 federal election, saying flaws in the NBN are due to “six years of vandalism” by the Coalition government.
In reality it’s hard to get an accurate picture on the balance of NBN technologies that are already in place in Australia. To get around this opacity, we used the “check your address” tool on the NBN website as a way to collect data on the footprints of technologies currently or about to be in place in three Australian metropolitan cities of Sydney, Melbourne and Brisbane.
The data suggests around half (40-60%) of homes in the three cities only have access to very old technology: hybrid fibre-coaxial (HFC). For people in these residences, access to the so-called “fibre network” remains only a fairy tale.Tooran Alizadeh, Author provided
Real data on the NBN
Lack of data transparency is a vexing aspect of the NBN. In our experience, NBN Co does not disclose meaningful information on service footprints in a single, usable dataset. This makes it difficult to evaluate outcomes and perform policy analysis associated with the service.
Nevertheless, our latest research has collected some data we believe was undisclosed previously.
Over December 2018 to February 2019, we used the “check your address” search function on the NBN Co website along with basic data mining techniques to extract data from a representative sample of all addresses across the three metropolitan regions of Sydney, Melbourne, and Brisbane.
We uncovered footprints of mixed-technology NBN, including current or planned fibre to the premises (FTTP), fibre to the node (FTTN), fibre to the building (FTTB), fibre to the curb (FTTC), hybrid fibre-coaxial (HFC), fixed wireless and satellite (Sky Muster).
Here we mainly focus on hybrid fibre-coaxial (HFC), which is the oldest technology component of the NBN. HFC is the cable network you might have connected to in the past to get Foxtel subscription TV.Tooran Alizadeh, Author provided
Major cities rely on HFC
The three maps shown here represent the spatial presence of fibre infrastructure versus more inferior HFC/satellite NBN in three metropolitan regions of Sydney, Melbourne and Brisbane (In reality very few urban homes use satellite, as shown in bar graphs below).
The three maps suggest inferior NBN technology is in abundant use across all three metropolitan cities. 62% of all addresses in the greater Brisbane region, 42% of all addresses in Melbourne, and 55% of all addresses in Sydney are (or will soon be) connected to the NBN via HFC.
These figures are at odds with a recent claim by Minister for Communications Mitch Fifield that his government is rolling out “a new network” to the whole nation. For about half of the addresses in three major Australian metropolitan regions, the NBN “rollout” looks like a re-branding exercise using an old cable network.Tooran Alizadeh, Author provided
Socioeconomic patterns of the NBN
To look at socioeconomic patterns of the NBN rollout, we used the Australian Bureau of Statistics’ (ABS) socio-economic indexes for area (SEIFA) and its index of Relative Socio-economic Advantage and Disadvantage (IRSAD) from 2016. We then cross examined the SEIFA data (divided into ten ranked groups known as “deciles”) with the NBN data extracted via the data mining exercise (described above).
It’s clear in the graphs below that a mix of both old and new technologies are in play across the three metropolitan regions of Sydney, Melbourne and Brisbane.
The analysis did not find any clear socioeconomic patterns comparing better-off SEIFA deciles of 8-10 versus worse-off deciles of 1-3. Nevertheless, the size of HFC adoption across the socioeconomic spectrum in all three major cities is quite concerning.
Authors: Tooran Alizadeh, Senior Lecturer in Urbanism, Sydney Research Accelerator (SOAR) Fellow, University of Sydney