If you are buying a business phone system in Australia today, you are almost certainly buying cloud-based VoIP rather than a box on the wall. The old copper network has been retired, on-premise hardware is on the way out, and most small and medium businesses now run their calls over the internet with apps on laptops and mobiles.
That is the short answer. The longer one is about what VoIP actually gives you, what it costs, and how to pick a setup that suits the way your team really works.
What a cloud phone system actually is
VoIP stands for Voice over Internet Protocol, which is a clunky way of saying your calls travel over your internet connection instead of a dedicated phone line. The “cloud” part means the brains of the system live in a provider’s data centre, not in a cabinet in your back office. You pay a subscription, and the provider handles the plumbing.
In practical terms, a cloud phone system gives you:
- Business phone numbers, including local numbers in different states and 1300 or 1800 numbers if you want them.
- Call routing, so calls land with the right person, ring a group, or follow a menu (“press 1 for sales”).
- Voicemail-to-email, so messages arrive as audio files or transcripts in your inbox.
- Apps for desktop and mobile, so staff can take and make business calls from a laptop or their own phone without handing out personal numbers.
Plenty of providers also bolt this onto tools you already use. If your team lives in Microsoft Teams, you can often turn Teams into your phone system so calls and chat sit in one place. The same goes for a CRM, where calls can be logged against a customer record automatically. If you are already weighing up your wider toolkit, our guide to business software in Australia covers how the phone piece fits with everything else.
Why copper went away
For decades, Australian businesses ran on copper phone lines and clunky on-premise systems known as PABXs. That era is over. The copper network that carried traditional landlines has been progressively switched off as the NBN rolled out, and the big telcos stopped selling traditional fixed line services to most customers some time ago.
The upshot: if you are still clinging to an old handset wired into the wall, you are running on borrowed time. The good news is that VoIP is generally cheaper, more flexible, and far easier to change when you hire someone or open a second location.
A modern phone system should follow your staff, not tie them to a desk.
What it costs
Cloud phone systems are almost always priced per user, per month. You pick a plan tier, multiply by your number of staff, and that is roughly your bill. Entry-level plans tend to cover the basics, while higher tiers add things like call analytics, advanced routing, integrations, and more generous call inclusions.
That range is a guide, not a quote. Actual pricing depends on the provider, the features you choose, how many numbers you need, and whether calls to mobiles and landlines are bundled or charged separately. Some providers also charge for physical desk handsets if you still want them, though many businesses now skip handsets entirely and just use the app. Prices and inclusions change often, so always check the provider’s current pricing page before you commit.
How to choose: three things that actually matter
There is a long feature list out there, and most of it will not move the needle for a small team. Focus on three things.
Call volumes and the features you genuinely need. A two-person consultancy and a 20-seat support desk have very different needs. Be honest about whether you will ever use call queues, IVR menus, or wallboards. Paying for an enterprise feature set you never touch is a common and expensive mistake.
Integration with your other tools. A phone system that talks to your CRM, helpdesk, or Microsoft 365 setup is worth far more than one that sits on its own island. Logged calls, click-to-dial, and screen pops save real time. Check that the integrations you care about are supported on the plan you are looking at, not just the top tier.
Your internet connection. This is the one people forget. A VoIP system is only ever as good as the connection underneath it. Patchy internet means dropped calls and robotic audio, no matter how slick the software is. If your office runs on a single consumer-grade connection, factor in a backup link or a mobile failover before you move your phones into the cloud.
Where handsets and mobiles fit
You do not have to choose between desk phones and mobiles. Most cloud systems let you mix and match: a few physical handsets at reception, apps on everyone’s laptop, and the mobile app for staff who are out and about. Field teams in particular benefit from taking business calls on their phones while their jobs and schedules live in something like field service management software. The phone stops being a fixed asset and becomes just another app that follows the person.
A quick reality check before you switch
Moving phone systems is not hard, but it is not nothing either. Number porting, the process of moving your existing business numbers to the new provider, can take anywhere from a few days to a few weeks, so do not cancel anything until your new system is live and tested. It is also worth running both systems in parallel for a short window so you do not miss calls during the handover.
If the whole thing feels like one more job you do not have time for, it can pay to get help setting up your business systems so the phones, the internet, and the software all play nicely together from day one.
The bottom line
A modern business phone system in Australia means cloud VoIP: numbers, smart routing, voicemail-to-email, and apps that work wherever your team does, billed per user per month. Choose based on the call volumes and features you will actually use, how well it integrates with your existing tools, and whether your internet can carry it reliably. Get those three right and the rest is detail.
This is general information, not procurement or financial advice. Figures were last checked June 2026 and pricing, plans, and rules change, so confirm the details with the provider before you sign up.