3CX alternative comparison | Australia | Fact-checked 20 June 2026
3CX vs Microsoft Teams Phone: which phone system is better for Australian businesses?
3CX and Microsoft Teams Phone solve different versions of the business voice problem. 3CX is a configurable PBX platform with deployment and SIP trunk flexibility. Microsoft Teams Phone is a Microsoft 365 voice strategy that adds PBX capabilities, PSTN connectivity options, auto attendants, call queues, voicemail, and calling inside the Teams experience.
Comparison note: this article is written from a consultant perspective for Australian businesses reviewing 3CX alternatives. We may have commercial relationships with certain products and services, including Yeastar distribution, so recommendations should be tested against your requirements. We can help assess 3CX, Microsoft Teams Phone, Yeastar, RingCentral, 8×8, Aircall, VoIPLine, and other options depending on your business.
In this 3CX vs Microsoft Teams Phone comparison
This Australian business phone comparison is written for buyers searching for 3CX alternatives, cloud phone systems Australia, office phone comparison, and the best 3CX replacement. It compares 3CX with Microsoft Teams Phone across Teams calling, PSTN options, Operator Connect, Direct Routing, licensing, call queues, emergency calling, and Microsoft 365 voice strategy.
Quick answer
Start with the practical verdict on when 3CX makes sense and when Microsoft Teams Phone is the better shortlist option.
Feature and pricing table
Use the comparison table to scan pricing model, deployment, calling features, Teams, support, and migration considerations.
Personalised comparison
Get help comparing Microsoft Teams Phone with 3CX, Yeastar, RingCentral, 8×8, Aircall, VoIPLine Telecom, and other Australian phone-system options.
Quick verdict
Choose 3CX when you want PBX control, simultaneous-call licensing, SIP trunk flexibility, desk-phone design, and provider-managed call routing. Choose Microsoft Teams Phone when Microsoft Teams is already the primary workspace and you want users to make, receive, transfer, and manage business calls from Teams, with PSTN connectivity through Calling Plans, Operator Connect, Teams Phone Mobile, or Direct Routing.
Best if you want PBX control
3CX is usually stronger when call flows, trunks, phones, hosting, and provider management need more control than a Teams-native model provides.
Best if Teams is the workspace
Microsoft Teams Phone is strongest when staff already live in Teams and the business wants calling inside Microsoft 365 rather than a separate softphone experience.
Best if you are unsure
Review licensing and PSTN first. Teams Phone licensing is separate from PSTN connectivity, and the carrier path can change cost, support, and resilience.
3CX vs Microsoft Teams Phone at a glance
Teams Phone is not simply another PBX. It is a voice layer inside the Microsoft 365 ecosystem, so the comparison should include licensing, PSTN connectivity, Teams adoption, governance, compliance, and who supports the carrier path.
| Area | 3CX | Microsoft Teams Phone | Australian buyer note |
|---|---|---|---|
| Core model | PBX-style business phone system with hosted, self-hosted, and on-premise paths. | Microsoft 365 phone system capabilities inside Teams, with PSTN connectivity through Calling Plans, Operator Connect, Teams Phone Mobile, or Direct Routing. | Teams Phone is best evaluated as part of your Microsoft 365 strategy. |
| Pricing model | 3CX commercial editions are priced by simultaneous calls. | Microsoft AU shows Teams Phone offers priced per user/month, with PSTN/calling plan options and GST exclusions shown at purchase. | Check Teams Phone licence, PSTN provider/calling plan, resource accounts, shared devices, support, and implementation. |
| PSTN connectivity | Typically through SIP trunks selected and managed by your provider. | Microsoft documents Calling Plans, Operator Connect, Teams Phone Mobile, and Direct Routing as PSTN paths. | Carrier path is the design decision. It affects numbers, emergency calling, support, resilience, and cost. |
| PBX features | Queues, ring groups, IVR, recording, reporting, apps, web client, CRM, Teams integration, and AI options by edition. | Teams Phone adds cloud PBX capabilities such as auto attendants, call queues, cloud voicemail, call forwarding, call transfer, and caller ID. | Teams Phone is strong for standard office calling, but complex call-centre needs may require another platform. |
| Teams experience | Can integrate with Teams in specific 3CX editions/system sizes. | Native Teams calling experience for users already working in Teams. | User adoption may be easier if Teams is already the daily workspace. |
| Best fit | Businesses wanting PBX control, trunk flexibility, and provider-led voice architecture. | Microsoft-centric organisations wanting calling inside Teams with Microsoft 365 administration. | Compare voice requirements, not just Microsoft familiarity. |
The real difference
3CX is phone-system led. Teams Phone is Microsoft-workspace led.
3CX starts with the phone system: how calls route, which trunks are used, where the PBX runs, how phones are provisioned, and who operates the service. That can be better when voice needs dedicated design and local provider ownership.
Teams Phone starts with Microsoft 365. It is compelling when users already collaborate in Teams and the business wants voice to be part of the same application, identity, compliance, and administration environment.
A practical review should map
- Teams adoption, Microsoft 365 licensing, and user/device types.
- Calling Plan, Operator Connect, Direct Routing, or Teams Phone Mobile options.
- Auto attendants, call queues, shared phones, reception, and after-hours routing.
- Emergency calling, service addresses, porting, support ownership, and NBN resilience.
Where each option usually fits
3CX: stronger PBX design
Choose 3CX when voice needs call-flow depth, SIP trunk flexibility, handset planning, provider management, and licensing based on simultaneous calls.
Teams Phone: stronger Microsoft alignment
Choose Teams Phone when users already live in Teams and Microsoft 365 governance, identity, and app familiarity are major drivers.
Hybrid path
Some businesses use Teams for collaboration and another platform for PBX/contact-centre workflows. Do not assume one tool has to do everything.
Need a clearer answer?
Compare 3CX, Teams Phone, and other voice options against your real Microsoft 365 environment.
We can help you assess Teams readiness, licences, PSTN options, call queues, reception workflows, SIP trunks, emergency calling, support, and migration risk.
Ask for a practical comparison
Use the form to request a neutral review of 3CX, Microsoft Teams Phone, Yeastar, RingCentral, 8×8, VoIPLine, or another option.
Recommendation by scenario
| Scenario | Better starting point | Why |
|---|---|---|
| You want dedicated PBX control | 3CX | More control over trunks, hosting, routing, handsets, and provider design. |
| Your users live in Teams | Teams Phone | Calling inside the same workspace can reduce app switching and training. |
| You need complex call-centre workflows | Compare carefully | Teams Phone may need contact-centre add-ons or another platform. |
| You need carrier choice | Depends on PSTN path | Operator Connect, Direct Routing, Calling Plans, and SIP trunks all change the answer. |
Frequently asked questions
Is Microsoft Teams Phone a good 3CX alternative?
Yes, if your business is Microsoft 365-led and wants calling inside Teams. It is less suitable as a like-for-like PBX replacement when advanced call routing, handsets, SIP design, or contact-centre workflows dominate the brief.
Is Teams Phone cheaper than 3CX?
It depends. Teams Phone is per-user and PSTN connectivity is separate. 3CX is licensed by simultaneous calls. Compare licence, carrier, support, device, implementation, and ongoing administration costs.
What is the difference between Teams Phone and a Calling Plan?
Microsoft states that Teams Phone licensing enables the phone-system capability, while a PSTN solution provides phone numbers and access to domestic, international, and emergency calling.
What should Australian businesses check?
Check emergency calling, service addresses, number porting, PSTN provider, NBN resilience, shared devices, reception workflows, compliance, and support ownership.