Seamless connectivity for your business with reliable nbn® 4G backup

4G backup (aka 4G failover) is an internet connection delivered over a 4G Mobile Broadband service that automatically kicks in if your fixed-line internet connection goes down. It enables business continuity by drastically reducing, and in most cases eliminating, internet downtime.

4G backup works through a 4G SIM card that's placed inside your router or modem router. Your modem can detect when its fixed-lined internet connection has failed. And once it detects that your primary internet is disconnected, it will automatically switch over to the 4G backup service. With 4G backup enabled, your modem will continue to function as a gateway to the internet.

If your business nbn® or Opticomm connection is lower than 100/40Mbps, 4G backup will cost $10/month, in addition to the cost of your plan. If your business nbn® or Opticomm plan is 100/40Mbps or higher, there is no additional cost for 4G backup.

If you start on a higher nbn® or Opticomm plan (100/40 or higher) and drop to a lower nbn® or Opticomm plan (50/20 or lower) there will be a change in the monthly cost from $0 a month to $10 a month.

The hardware required for Aussie Broadband 4G backup will cost $240, which can either be made as a one-off payment, or paid off over 6 months when purchased through the call centre. To purchase your hardware on a repayment plan, call our Australian-based call centre on 1300 480 905.

Yes. We've designed our 4G failover service to work with our pre-configured hardware and business nbn® plans. We do not offer 4G backup services that work separately with external hardware and internet plans.

To enable seamless connectivity, we've designed our 4G backup connections to run at 25/2 Mbps. While designed to maintain essential connectivity, a 4G backup connection may not have the speeds you're used to on your fixed-line connection, that support bandwidth-intensive activities. Therefore, when running on a 4G backup connection, we recommend that you prioritise essential business activities.

No. Your modem needs a power supply to keep you connected to the internet, meaning it won't work if there's a power outage.

For an internet connection capable of working without a power supply, check out our 4G mobile broadband plans.

All our business nbn® plans come with a free static IP address. Your 4G backup connection, however, comes with its own dynamic IP address, so won't use the same static IP address as your business nbn® connection.

No, 4G backup does not come with international roaming, so you won't be able to use 4G backup outside Australia.

No. Our 4G backup services are designed to work only as a backup to a business nbn® connection. So, our 4G backup-compatible devices will default to your fixed-line internet connection. If you would like to use 4G internet as your primary internet connection, you can purchase a standalone mobile broadband connection.

The LTE light on your modem will flash if your primary internet connection goes down, indicating you're connected to the internet via 4G backup.

When your fixed-line internet connection goes down, you'll be disconnected from the internet until the 4G backup route is established. This likely won't take long, and in most cases, you won't even notice there was downtime.

If you're on a call when your connection goes down, the call will re-connect as soon as the 4G backup connection kicks in, which shouldn't take long. So, rest assured the call won't drop, but you might need to politely ask the person on the other end of the line to kindly repeat themselves!

No, remote access only works from your business's primary connection, so they won't work with 4G backup. If you have any IP Sec (Internet Protocol Security) VPN connections between sites, you'll need to set them up again to work with your 4G backup connection.

No, we've configured our 4G backup SIMs to work seamlessly with Aussie Broadband hardware. Therefore, our 4G backup SIMs will not work on any other device.

Our 4G backup uses the Optus 4G mobile network.

Our 4G backup service comes with unlimited data, so you can continue working without worrying about data usage.

As long as you can access the Optus 4G mobile network, you can access 4G backup. Optus's 4G mobile network covers 98.5% of the Australian population. To confirm if 4G backup will work at your address, check out our mobile coverage map.

No, you cannot add data to 4G backup. This is because our 4G backup service already comes with unlimited data, so there's no need to add more!

Yes, you can. 4G mobile SIM cards will work as long as it's in a device capable of providing 4G backup. This will be your modem router, or your router if your modem and router are separate devices.

To enable 4G backup with your mobile SIM, simply insert the SIM card into your router or modem router's SIM card slot. If you'd like to use your own SIM card for 4G backup, you will need to configure the SIM yourself.

However, the 4G backup SIM that comes with your business nbn® plan offers better value for money than using your own SIM.

To set up a 4G backup system, all you need to do is insert a SIM card into a 4G failover-compatible router or modem router. If you purchase a modem router alongside your business nbn® connection with 4G backup, we'll insert the SIM card into the hardware before we send it to you.

4G backup typically takes a few seconds to activate in the event of a primary internet connection failure.

Yes, you can still access your modem gateway using your 4G backup connection.