Two capable systems. The differences are in the operating model.
Core telephony overlaps almost completely, so a feature-tick comparison will not decide this. What separates them is remote access architecture, how the call centre tooling is packaged, and which platform each client runs on.
Where the two systems genuinely diverge.
Rows where both products are equivalent are left out — extensions, trunks, routing, DID and DOD, call transfer, parking, pickup, BLF, T.38 fax, hot desking and voicemail to email are all supported by both.
| Capability | 3CX | Yeastar P-Series |
|---|---|---|
| Remote extensions | Customer-premises SBC required. STUN not supported from V20 onward for adding new remote phones or reprovisioning existing ones. | Encrypted tunnel with a Yeastar-supplied domain name, via a Yeastar-managed or onsite SBC. No customer-owned SBC, additional hardware or inbound firewall ports. |
| Desktop client | macOS not supported. | Windows and macOS. |
| Call Flow Designer | Separate application. | Built into the PBX interface. |
| Operator and queue panels | One combined panel. | Independent operator and queue panels with drag-and-drop call dispatch. |
| Wallboard | One wallboard covering all queues. | Independent wallboard per queue. |
| SLA | SLA time per call. | SLA time per queue, with an alarm threshold. |
| Static agents | Not supported. | Supported, alongside dynamic agents. |
| Agent pause and pause reasons | Not supported. | Supported. |
| Outbound call centre | Not supported. | Auto-dialler, outbound wallboard, campaign management and call disposition. |
| Satisfaction survey | Not supported. | Supported. |
| Call flip and call switch | Not supported. | Supported. |
| SDKs | Not supported. | Mobile, web, desktop and pad SDKs. |
| Selectable DOD, busy camp-on, AutoCLIP | Not supported. | Supported. |
| Wake-up IVR | Supported. | Not supported. |
| VoIP quality monitor | Supported on V20 and later. | On the Yeastar roadmap rather than shipping. |
| Video conferencing | Positioned for enterprise-level conferencing. | Lightweight, aimed at SME meeting requirements. |
Comparison drawn from Yeastar’s published competitive material. Competitor capabilities change; confirm the current position with the vendor before relying on any line of this comparison in a customer proposal.
A comparison usually ends in a migration.
If the outcome is a move off 3CX, the configuration has a documented mapping rather than a rebuild.
- Users, contacts, voicemail settings and registration credentials
- Business hours, holidays and voice prompts
- IVR, ring groups, queues and voicemail
- SIP trunks, inbound and outbound routes, emergency numbers
- IP phones by network scenario
The trunks move last.
The documented sequence keeps 3CX carrying live calls until the trunk cutover, which keeps the disruption window scheduled rather than open-ended.
What this means if you sell both.
The 3CX conversation in Australia is usually triggered by a renewal or a version change rather than dissatisfaction. The useful question is not which product wins a feature count, but which one the customer’s remote-access position, client platforms and call centre requirements actually suit.
Worth checking per opportunity
- Whether remote extensions need an onsite SBC today
- Which desktop platforms the users are on
- Whether wake-up IVR or heavier video is in use
- Whether the call centre needs outbound campaign tooling
- What the licence position looks like on both sides
Comparing the two for a live opportunity?
Bring TeraFi the requirement and the current environment. We will work through the fit rather than the feature list.
Fact-checked on 22 September 2026 against the Yeastar vs. 3CX feature comparison (March 2026). Comparison drawn from Yeastar’s published competitive material. Competitor capabilities change; confirm the current position with the vendor before relying on any line of this comparison in a customer proposal.