NBN Co’s full-fibre speed trial has shattered expectations about what Australia’s national broadband network can actually deliver. In March 2026, the company demonstrated over 230 Gigabits per second capacity in laboratory conditions, proving that the current 2Gbps customer speeds are not a ceiling but a floor.
Key Takeaways
- NBN Co achieved over 230 Gbps capacity in its March 2026 full-fibre speed trial, with potential to reach terabit rates
- Multiple generations of optical technologies operated simultaneously on existing FTTP infrastructure without conflicts
- FTTP now represents 35% of all NBN connections, with 2.99 million active FTTP subscribers as of December 2025
- More than 1 million customers have upgraded from legacy copper to full fibre, signalling strong demand for faster speeds
- The trial demonstrates NBN’s network is future-ready and capable of supporting ultra-fast speeds for decades
What the full-fibre speed trial actually proved
The laboratory trial, conducted in partnership with Nokia at the Broadband Forum’s Spring Member Meeting, tested whether multiple optical technologies could coexist on the same physical fibre infrastructure. The answer was unequivocal: yes. Coherent optics, GPON, XGSPON, and 50GPON access technologies all operated simultaneously without degrading each other’s performance, achieving over 230 Gbps total capacity. This is not a theoretical exercise—it is proof that NBN’s full-fibre network can scale far beyond what customers currently experience.
The significance lies in architecture, not just raw speed. Current FTTP deployments use specific optical technologies optimized for today’s demand. The trial shows that NBN can layer newer, faster technologies on top of existing infrastructure without ripping it out and starting over. That matters because network upgrades are expensive, and backward compatibility is a luxury most broadband operators do not have.
FTTP adoption is accelerating across Australia
The full-fibre speed trial arrives at a moment when FTTP adoption is accelerating. As of December 2025, there were 2.99 million FTTP connections on the NBN network, representing a 24% year-on-year increase. FTTP has become the dominant fixed-line technology, now accounting for approximately 35% of all NBN connections. More than 1 million customers have switched from legacy copper to full fibre, suggesting demand for faster speeds is real and sustained.
This adoption surge reflects a simple fact: when given the choice between copper and fibre, Australians choose fibre. The upgrade path from FTTC (fibre to the curb) to FTTP is becoming easier, and NBN Co has been loosening eligibility requirements to allow more customers to make the jump. The trial results provide a compelling reason to accelerate that transition—today’s upgrades position customers to take advantage of tomorrow’s speed tiers without requiring new physical infrastructure.
What this means for customer speeds in the next decade
The 230 Gbps achievement is not an immediate customer benefit. Nobody is signing up for a 230 Gbps home internet plan next month. But the trial establishes that the network’s capacity ceiling is nowhere near current deployment limits. The researchers explicitly noted potential to reach terabit rates in future trials, meaning speeds could increase by orders of magnitude before the underlying fibre infrastructure becomes a bottleneck.
This future-proofing is crucial. Broadband networks built on copper have hard limits—you cannot squeeze unlimited speed out of a copper wire. Full fibre has no such constraint. The trial proves that NBN’s FTTP network can support whatever applications and demand patterns emerge over the next 20 or 30 years without becoming obsolete. That is a rare advantage in infrastructure, and it explains why so many customers are choosing to upgrade despite current speeds being adequate for most use cases.
How does this compare to other broadband technologies?
Australia’s broadband landscape still includes mixed technologies. Some customers remain on FTTN (fibre to the node), which relies on copper for the final stretch to homes and has lower speed ceilings. Others use fixed wireless or satellite. The full-fibre speed trial underscores a fundamental architectural truth: there is no substitute for dedicated fibre running directly to premises. Wireless technologies, satellite, and hybrid copper-fibre approaches all have inherent speed and latency constraints that fibre does not. The trial proves NBN’s FTTP network can evolve and scale while these alternative technologies are locked into their current performance envelopes.
Is the full-fibre speed trial a sign of faster customer speeds coming soon?
The trial demonstrates technical capability, not an imminent product launch. NBN Co will need to evaluate demand, plan infrastructure investments, and coordinate with internet service providers before rolling out significantly faster speed tiers. That said, the trial removes any doubt that the network can deliver. The question is no longer whether FTTP can go faster—it is when and at what price.
What optical technologies were tested in the trial?
The trial tested four optical access technologies operating simultaneously: coherent optics, GPON, XGSPON, and 50GPON. These represent different generations of fibre-optic technology, from established standards to latest approaches. The fact that they coexisted without interference shows NBN can deploy newer technologies without abandoning investment in older ones, a crucial advantage for managing a national network with millions of diverse customers.
Why does the full-fibre speed trial matter for Australia’s broadband future?
The trial settles a critical question about Australia’s broadband infrastructure: is the national network built on a foundation that can evolve, or is it destined to become obsolete? The answer is clear. NBN’s FTTP network is not a fixed product—it is a platform capable of supporting speeds and services that do not yet exist. That is rare in infrastructure and valuable for a country betting its digital future on a single national broadband network. The 230 Gbps result is not about speed for speed’s sake. It is about confidence that the investment in full fibre will pay dividends for decades, and that today’s customers upgrading to FTTP are not choosing a dead-end technology. They are choosing a foundation that can scale.
This article was written with AI assistance and editorially reviewed.
Source: TechRadar
