The question most businesses face
If you're evaluating your business phone system — whether you're setting one up from scratch or replacing ageing hardware — you'll likely come across two options: a traditional on-premise PBX and a hosted (cloud) PBX. Both can deliver a professional phone system. But the experience of owning and running each is quite different.
This article walks through the key differences so you can make an informed decision.
Upfront cost
An on-premise PBX requires physical hardware — servers, handsets, cabling, and often specialist installation. For a small business, this can run into several thousand dollars before you've made a single call. For larger businesses, the cost scales significantly.
A hosted PBX has no hardware to purchase. You pay a monthly subscription based on the number of extensions and features you need. The upfront cost is typically limited to a setup fee covering system design and configuration.
Ongoing maintenance
On-premise hardware requires regular maintenance — firmware updates, hardware replacements as components age, and a specialist callout every time something needs changing. If your system is end-of-life (as many older Panasonic, NEC and Avaya systems now are), you may find that replacement parts are no longer available and vendor support has ended.
With a managed hosted PBX like CallPath, maintenance is handled entirely by the provider. Routine changes — adding extensions, updating menus, changing routing rules — are included in the monthly fee with no callout required.
Side-by-side comparison
| Consideration | On-premise PBX | Hosted PBX (CallPath) |
|---|---|---|
| Upfront hardware cost | High | ✓ None |
| Monthly cost | Low (after purchase) | ✓ Predictable fixed fee |
| Maintenance responsibility | Your team or a contractor | ✓ Managed by CallPath |
| Hardware failure risk | Single point of failure | ✓ Redundant cloud infra |
| Adding extensions | May need hardware/licences | ✓ Software change only |
| Remote workers | Complex to configure | ✓ Native softphone support |
| Multi-site | Requires separate hardware | ✓ One system, any location |
| Disaster recovery | Requires separate planning | ✓ Built-in Syd & Melb failover |
| Contract lock-in | 3–5 year hardware cycles | ✓ Month-to-month |
When on-premise still makes sense
There are scenarios where an on-premise system remains a reasonable choice — typically where internet connectivity at the site is unreliable, where there are strict data sovereignty requirements that can't be met by cloud infrastructure, or where a significant existing hardware investment still has years of useful life.
For the majority of Australian businesses, however, these constraints don't apply — and the operational advantages of a managed hosted system are difficult to ignore.
The bottom line
If your current system is working well and was recently installed, there may be no urgency to change. But if you're facing ageing hardware, growing remote teams, or the prospect of another large hardware investment, a managed hosted PBX is worth a serious look.
The economics have shifted considerably over the past decade. The ongoing cost of maintaining on-premise hardware — in time, callouts and eventual replacement — often exceeds the cumulative cost of a hosted service well before the hardware reaches end of life.
Want a straight answer? Tell us about your current setup and we'll give you an honest assessment of whether CallPath makes sense — no sales pressure. Get in touch here.