For many Australians, the moment they realise they don’t have a working landline in a blackout is when they are already in the blackout, and the landline isn’t working.
The traditional home phone that used to run through storms and outages has quietly disappeared in most households in Australia, replaced by a system that depends on mains power to be working in the house.
The good news is that there is a solution – and there are practical ways to make sure you still have a reliable way to make outside contact when the power goes out.
Why the Old Landline Worked in a Blackout — And the NBN Doesn't
In the not-so-distant past, the electricity in a traditional corded homephone came down the copper line directly from the telephone exchange (not from your house’s electricity supply). While dated now, during emergencies this setup had one major advantage: it carried its own power, so even if you experienced a blackout you could still make and receive calls.
Since then, we have widely accepted a modern and more advanced NBN setup in our homes, but does NBN work in a power outage? Unfortunately, no. Generally, today’s home phone services rely on equipment installed inside the house, and need local power to operate.
In practical terms, that means when the power goes out, the NBN equipment switches off too. Once that happens, most NBN-connected home phones stop working. It’s important to note that this isn’t a fault or a design flaw specific to one provider, but simply how modern networks operate.
What Actually Happens to Your NBN Phone in a Blackout
While the specifics may differ from household to household depending on your exact setup, the outcome is similar; no power means no home phone.
Homes connected to Fibre to the Premises (FTTP) were once able to request a battery backup unit for the NBN connection box, which could power the phone service for about five hours during an outage; however, NBN Co stopped this offering in 2024.
Fixed Wireless, Fibre to the Node, Fibre to the Building, Fibre to the Curb and HFC connections alike do not natively have in-home battery options for the phone service, leaving very few connection options available in case of an outage.
Why this Matters More than People Realise
Unfortunately, blackouts aren’t as rare as we might want them to be in Australia. Storms, heatwaves, planned maintenance and grid faults regularly leave households without power for hours at a time. For most people, it’s a significant inconvenience, but for some it can become a genuine safety issue.
Older Australians in particular can be sorely affected without access to a working home phone, which is the demographic’s main form of communication. They’re also less likely to carry a charged mobile phone with them around the house.
Regional households experience longer outages on average than their metropolitan counterparts
A 4G Home Phone is the Simplest Backup
One of the easiest ways to avoid the problem entirely is with a 4G home phone backup for blackout situations.
Unlike a standard NBN home phone setup, a 4G home phone uses the mobile network to make and receive calls, not relying on your home’s internet service. Generally, it sits on a desk like a familiar landline handset, designed for easy use with big buttons, a clear display and a loud ringtone. And the best part? It has its own internal battery, so it keeps working when your mains power doesn’t, so long as the mobile network in your area is up.
Important Things to Check Before You Switch
A 4G home phone without NBN suits most households well; however, there are a few practical things worth looking into first.
Local mobile coverage
Because calls run over the 4G network, call quality relies on the signal strength at your address. Make sure you have a carrier with reliable coverage, and place the handset where the signal is strongest.
Network outages still affect you
If the mobile tower nearest you also loses power during a long blackout, your 4G home phone backup for blackout will be affected too. No phone service is completely outage-proof, but in case of local power failure, a 4G home phone is a great safety net.
Calling 000
You can call emergency services from a 4G home phone. Unlike a fixed line, however, the call won’t be tied to your street address, so get ready to clearly state your location to the operator.
Medical alarms and similar devices
If you rely on a monitored medical alarm or back-to-base security alarm, speak to your provider before switching as some legacy alarms are designed around copper or specific NBN voice setups.
Who This Setup Suits Best
An NBN landline backup or 4G phone makes particular sense for a few groups of Australians. Older people living independently may like the familiarity of a simple, traditional-looking handset, especially one that keeps working during storms and outages.
Regional households may be attracted to home phones without NBN as they are more prone to longer blackouts and periods of unstable infrastructure.
Renters, too, may find an NBN-free setup preferable as there’s no need for fixed-line installation or technician visits.
For any walk of life, a 4G home phone makes power outages less frustrating, maximising your chances of having access to a working landline.
Don’t Wait for the Next Blackout to Find Out
Most households won’t think of having a home phone backup for a blackout until they’re in one. Thinking ahead and having a backup plan matters, not because blackouts happen every day, but because when they do, you’ll wish you thought of it sooner.
A 4G home phone without NBN is one of the simplest ways to keep a reliable calling option available during an outage, and Opel Mobile has a whole 4G home phone range for you to browse.
For reliable everyday use and an important backup in case of a blackout, you’ll be thanking yourself for being practical and prepared.