national broadband network
up to 100mbps
from $39.95/mth

want to know more?

Below are some frequently asked questions about the NBN. Additional information is also available from the NBNCo website.

When is the NBN coming to me?

The NBN is the largest public infrastructure project ever undertaken in Australia, and it is estimated to take up to 10 years to build.

NBN Co publishes its 3-year rollout maps on its website. Click here to check availability.

How does it get installed?

The NBN installation consists of an outside box (called the premises connection device (PCD) – either a fibre termination unit or a wireless antenna) generally installed on an outside wall of your premises, and an inside box (called the network termination device or NTD) with a separate battery unit to maintain operation in case of mains power failure.

You will submit your application with DCSI, and we will interface with NBN Co to organise for their contractors to come out and perform the installation. The boxes will typically be installed as close to the street as possible. You can request a different location but costs may apply.

There is no charge for standard installation.

What does it look like?

Below are some photos of a residential NBN fibre service that was installed with DCSI in October 2013. The NTD and PSU were located on an inside wall of the home's garage. Existing Cat5e cabling installed independently by the customer connected the NTD to the router located in a bedroom.

NBN installation

Fibre inside – NTD in case (left) and power supply unit (right)

Dimensions of the units are, approximately:

  • NTD in case: 300mm(W) x 200mm(H) x 100mm(D)
  • NTD without case: 170mm(W) x 130mm(H) x 30mm(D)
  • PSU: 220mm(W) x 180mm(H) x 80mm(D)

NBN installation

Fibre outside – PCD mounted on garage wall

What speed will I get?

NBN services can be configured at a number of speed tiers. Not all speed tiers are available on all service types. Speeds expressed below are "download/upload", in megabits per second (Mbps)

fibre & fttn

  • 12/1 Mbps
  • 25/5 Mbps
  • 50/20 Mbps
  • 100/40 Mbps


  • 12/1 Mbps
  • 25/5 Mbps
  • 50/20 Mbps

The speed you can actually download at will be slightly less than these, since there are some protocol overheads. The usual variables such as the speed of the networks between you and the endpoint, and network congestion apply too.

At the higher speed tiers, you'll also need to make sure your router has enough processing power to handle the speeds – some older or low-end models simply run out of steam. Routers supplied by DCSI have been tested to ensure at least 100Mbps throughput capability with a PPPoE + NAT configuration.

How will the phone work?

Since your NBN service will replace your standard phone line, your existing phone setup may require some changes.

DCSI provides Voice over IP (VoIP) services for use in conjunction with an NBN internet service. A small box called an Analogue Telephone Adaptor (ATA) connects to your router, and your existing analogue phones can plug into this. Some rewiring of your internal phone cabling may be required; this will be at your expense.

We can arrange to port (transfer) your existing landline phone number over to the VoIP NBN service.

Will my device work with the NBN?

  • Computers, laptops, smartphones, tablets – absolutely. Just like other broadband services, you can get online by plugging into your router with a standard network cable, or connecting wirelessly if your router and devices support it.
  • EFTPOS machines – maybe. It depends on how your EFTPOS machine connects to the bank.
    • Analogue (PSTN) telephone line – this will be replaced with VoIP and we do not support EFTPOS machines over VoIP. You should contact your bank to see about upgrading to an IP-based EFTPOS machine.
    • Digital (ISDN) telephone line – Telstra is not switching off its ISDN lines at the same time as standard phone lines. Check the NBN Co website for more information.
    • Over the Internet (IP) – these will continue to work as normal, but connected to your NBN service instead of your existing internet service.
    • Over a mobile network – this is independent of the NBN and will continue to work with no changes.
  • Fax machines – the NBN itself can support fax via the UNI-V port on the connection box. However DCSI will not support fax over our VoIP service.
  • Teletypewriter (TTY) devices – The NBN itself can support TTY devices, but DCSI will not provide support for these devices.
  • Back-to-base alarms and security systems – check with your alarm service provider.

What about my internal wiring?

Since the NBN inside connection box (NTD) may be installed in a location that is not ideal for wired connectivity back to the rest of your home, you may need to employ the services of a registered cabler to do this work for you. This is outside the scope of the work that DCSI, and NBN Co on behalf of DCSI, can perform.

We use and recommend the services of RNR Electronics, a local company with many years of experience.

If I'm in a wireless or satellite coverage area, can I apply for fibre?

Under the current legislation you can apply for a network extension. You must be willing to fund the incremental cost of extending the network to your premises. You will deal directly with NBN Co to arrange this.

See the NBN Co website for more information.

Any other questions?

If you have any other questions, our friendly team can answer them for you. Simply contact us via phone or email.