3CX Phone System Sydney | Setup, Hosting & Support

Key facts

• 3CX licenses by simultaneous calls, not per user, so headcount does not directly drive the licence cost.
• That model suits businesses where many staff have a phone but only some are on calls at once.
• 3CX is sold in editions, with call recording and CRM integration from the mid tier up and advanced queue features in the top tier.
• 3CX can be hosted in the cloud or on your own server, and supports desk phones, desktop apps, and mobile apps.
• The 3CX licence is separate from your SIP trunk and call charges, which come from a carrier.

How does 3CX licensing work?

3CX is licensed by simultaneous calls, which is the number of calls that can be active at the same time, not the number of staff or extensions. A business with 40 staff might only ever have eight calls happening at once, so it licenses for that concurrency rather than for 40 users. This is the feature that most often makes 3CX cost-effective, because it decouples the licence from headcount.

Licensing is annual and comes in editions that unlock different features. The practical effect is that the entry edition covers core calling, the mid edition adds things like call recording and CRM integration, and the top edition adds advanced call-queue and reception features for busier phone environments. Because the model changed in recent years and pricing depends on edition and concurrency, we scope the right combination for your call patterns rather than quoting a per-seat figure. A reseller quote against your actual usage is the definitive number.

What is 3CX good at?

3CX is strong wherever the phone is a core part of the business rather than an occasional tool. Reception-heavy environments benefit from its call queues, ring groups, and auto-attendants. Businesses with multiple sites can run them all as one system with shared extensions. And teams that record calls for compliance or training, or want calls logged against customer records in a CRM, get those features without bolting on extra products.

In our experience the businesses that get the most from 3CX are the ones that would otherwise need several add-ons on a simpler platform. When call recording, CRM integration, multi-site, and proper queue handling all matter, having them in one platform licensed by concurrency tends to work out both simpler and cheaper than the alternatives. For a Microsoft-365-centric office that just wants basic calling, though, Microsoft Teams Phone may be the better fit, and we will say so.

Cloud or on-premise: how should 3CX be hosted?

3CX can run as a hosted cloud instance or on a server you control, and for most SMEs cloud hosting is the sensible default. Cloud removes the need to maintain a server, handles updates and resilience, and keeps the system reachable from anywhere, which matters for remote and hybrid staff. We host and manage the instance so it is patched, backed up, and monitored.

On-premise hosting still makes sense in specific cases, such as where there is a strong reason to keep the system inside your own network or integrate tightly with on-site equipment. We assess which model fits during scoping. Either way, the day-to-day experience for staff is the same; the difference is where the system lives and who looks after the underlying infrastructure.