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Somewhere in your business there is a customer who rang the office, reached voicemail, then messaged someone’s mobile, then sent an email. Three channels, one enquiry, and no single place where anybody can see all of it. Unified communications is the industry’s answer to that problem, and for most Australian businesses it turns up as a sales pitch long before it turns up as a decision anyone has actually made.
This post does the part the pitch skips. What unified communications is in plain terms, and at what size it starts earning its keep for an Australian business of 3 to 20 staff. That includes the answer nobody selling it volunteers, which is that for plenty of businesses it does not earn its keep yet.
What is unified communications?
Unified communications is a single platform that carries your voice calls, video meetings, internal messaging and presence information, administered in one place against one list of users. The word doing the work is “unified”: the point is not that you gain features, it is that the features stop living in separate places with separate logins and separate bills.
Most businesses already have all four capabilities. They just have them scattered.
| Capability | What a scattered setup looks like | What unified looks like |
|---|---|---|
| Voice calls | Desk phones on one system, mobiles on personal plans | One number plan, one call history, desk and mobile |
| Video meetings | Whatever the last client sent a link for | One meeting tool tied to the same directory |
| Internal messaging | A chat app nobody administers | Messaging attached to the same user accounts |
| Presence | Walking over to see if someone is at their desk | Availability visible before you transfer a call |
Presence is the one people underrate. It is the difference between transferring a call to a colleague and transferring a call to a colleague who is actually free to take it.
Is unified communications the same as VoIP or a cloud phone system?
No, and the three terms sit at different layers. VoIP is the technology that carries the call over an internet connection instead of a copper line. A cloud phone system is where the phone system itself lives, in a data centre rather than a cupboard in your office. Unified communications is the commercial bundle that puts video, messaging and presence alongside that phone system.
You can have VoIP without unified communications, and most Australian small businesses do. You cannot really have unified communications without VoIP, because the whole model depends on calls being just another data service. If the underlying definitions are still fuzzy, the business phone system explainer covers the layers underneath this one.
The two changes that made this a real question for Australian businesses
For years unified communications was an enterprise conversation. Two things dragged it down into the small-business bracket, and neither of them was a vendor’s marketing budget.
The first is that the copper is going. nbn has published which copper services are being permanently disconnected in the rollout, and home and landline phone services delivered over the copper network are explicitly on that list. A business forced to replace its phone service anyway is a business making a platform decision whether it wanted to or not.
The second is that customers stopped using landlines. ACMA research found that only 12 per cent of Australian adults used a landline phone in 2025, down from 15 per cent in 2024 and 54 per cent in 2017, while 61 per cent used an app for voice calls in 2024. Your customers are already spread across channels. The question is whether your business is organised for that or just absorbing it.
Why do businesses start looking at unified communications?
Usually because the tool count got out of hand, not because anyone went shopping for a platform. One of the reasons we hear most often from Australian business owners is simply that staff are switching between separate apps for calls, chat, video meetings and messaging, and the switching itself has started to cost time.
That is a different starting point from the vendor pitch, and it changes what “does my business need this?” means. The question is not whether unified communications is good in the abstract. It is whether the friction of moving between your current tools is now large enough to be worth removing. If your team lives in one app all day and picks up a desk phone twice, it is not. If a customer conversation routinely spans a call, a chat and a follow-up meeting invite across three products, it might be.
We are not going to put a headcount on that, because there is not an honest one to give. What follows is how to work it out for your own business.
At what size does unified communications actually pay off?
It pays off at roughly the point where no single person can hold the whole team in their head, which in practice starts somewhere between five and twenty staff. Below that, the coordination problem unified communications solves is small enough that people solve it by turning around and asking.
Two things change as headcount climbs. Transfers stop being reliable, because you no longer know who is free. And administration stops being free, because adding, moving or removing a person now touches several systems instead of one.
| Team size | What usually makes sense |
|---|---|
| 1 to 4 people | A business number handled properly on the phones you already carry. Consolidation is solving a problem you do not have. |
| 5 to 20 people | The band where it starts to pay. Presence, internal transfers and one administration point stop being luxuries. |
| 20 or more, or multiple sites | Consolidation is usually the cheaper option, because the cost of running parallel systems has become a job someone does. |
Worth keeping the Australian shape of this in view. Of the 996,203 employing businesses recorded at 30 June 2026, 689,600 had 1 to 4 employees and 232,912 had 5 to 19. Only 68,325 had 20 to 199. Most of the material written about unified communications is aimed at a slice of the market that barely exists here.
When is unified communications not worth it yet?
It is not worth it when your existing tools are working and the only complaint is that there are several of them. Tool sprawl is annoying. Annoying is not the same as expensive, and replacing four things that work with one thing that has to be learned carries a real cost in disruption.
Four signs it is premature
The reverse test is more useful than any feature list. Count how many separate places a new employee’s communications accounts have to be created, and how many have to be closed when they leave. If that number is one or two, stay put. If it is four, you are already paying for the sprawl in someone’s time.
What you are actually buying, layer by layer
The pitch tends to arrive as a single price for a single thing. It is not one thing, and knowing the layers is what lets you compare two proposals honestly.
The numbers and the carriage. Someone has to hold the phone numbers and connect you to the public phone network. Note that NexGen does not sell internet services, virtual numbers or 1300 numbers, so a genuine comparison means being clear which supplier is responsible for which layer.
The phone system. Call flows, auto attendants, hunt groups, voicemail, call recording. This is the layer that decides whether a caller reaches a person.
The endpoints. Desk handsets, headsets, and the app on a mobile. NexGen supplies business phone handsets and the systems behind them, which for a team of this size is usually still where most calls are answered. For mobile call handling, the Webex app covers BYOD on iPhone and Android.
The collaboration layer. Video and messaging. The layer most likely to already exist in your business, and the one worth thinking hardest about replacing.
One caveat that deserves saying out loud: consolidating onto a single platform also consolidates your exposure when it breaks. The Telecommunications Industry Ombudsman recorded 57,592 complaints in 2024-25, 11 per cent of them from small businesses, with “no phone or internet service” the third most common issue at 7,294 complaints. Ask what happens on the day the platform is down, before you put every channel on it.
Does a collaboration app count as a phone system?
No. A collaboration app becomes a phone system only when a carrier arrangement is attached to it, and that is a separate purchase from the app licence. This is the single most common misunderstanding in the whole topic.
Microsoft states it plainly in its own PSTN connectivity options documentation: to use telephony services with Teams Phone, the user must be licensed for Teams Phone and also equipped with a connection to the public phone network from a service provider. Microsoft lists four different ways of arranging that connection, which is a fair signal of how much decision-making sits behind the words “we already have Teams”. If that is your starting point, the Teams phone system breakdown covers what the app does and does not give you.
Where to start if you are somewhere in the middle
Most readers of this post will be in the five-to-twenty band, where the answer is genuinely “it depends”, and the useful next step is smaller than a platform decision. Write down the four layers above and mark who supplies each one today. Then mark which of them you are actually unhappy with. Businesses that do this often find one weak layer rather than four, and fixing one layer is a much shorter project.
If it turns out you do want the layers compared side by side, that is worth doing properly rather than off a feature grid. NexGen has 17 years in business, 7,500+ businesses served, offices in NSW, QLD, VIC, WA and SA, and an Australian-based support team, and standard onboarding is 7 business days. You can start by working through a business phone comparison and seeing which layer the gap is actually in.
Work out which layer your gap is in
Compare business phone systems side by side, with NexGen’s 17 years and 7,500+ businesses served behind the answer.