Why This Onsite PBX Comparison Matters
Choosing the right business phone system is one of the most impactful infrastructure decisions a company makes. The wrong choice means frustrated staff, missed calls, and wasted budget. The right choice means seamless communication that scales with your business.
In South Africa, two onsite PBX platforms dominate the market for modern IP-based deployments: 3CX and Yeastar. Both are excellent — but they serve different business profiles. This onsite PBX comparison cuts through the marketing to help you decide which platform is right for your organisation.
For a side-by-side technical breakdown, see our detailed PBX comparison page.
3CX Overview: Built for Call Centres and Sales Teams
3CX is a software-based IP PBX that runs on standard Linux or Windows servers. It has evolved from a simple PBX into a full unified communications platform with a strong focus on call centre functionality.
3CX Strengths
- Advanced call centre features — built-in wallboards, queue strategies, SLA monitoring, and real-time agent status
- CRM integrations — native connectors for Salesforce, HubSpot, Zoho, Microsoft Dynamics and more
- Web client and mobile apps — full softphone experience on desktop, iOS and Android
- Call recording — integrated recording with search and playback
- Video conferencing — built-in WebRTC video meetings (up to 250 participants on Enterprise)
- Open platform — runs on Linux, Windows, or in the cloud; supports most SIP phones
3CX Considerations
- Requires more technical knowledge for initial setup and ongoing management
- Annual subscription licensing can become expensive for small teams
- Admin interface is powerful but has a steeper learning curve
Yeastar Overview: Built for SMEs and Professional Offices
Yeastar manufactures purpose-built PBX appliances (the P-Series and S-Series) designed for simplicity and reliability. The platform is ideal for businesses that want a professional office phone system without needing a dedicated IT team.
Yeastar Strengths
- Plug-and-play simplicity — purpose-built hardware with an intuitive web management interface
- Linkus UC softphone — unified communications app for desktop and mobile with chat and video
- Auto-provisioning — supports 400+ SIP phone models with zero-touch provisioning
- Built-in video conferencing — integrated video meetings without third-party tools
- Hotel PBX mode — built-in hospitality features for hotels and lodges
- Lower total cost of ownership — perpetual licence with optional annual maintenance
Yeastar Considerations
- Call centre features are improving but don't match 3CX's depth for large contact centres
- Fewer native CRM integrations compared to 3CX
- Hardware appliances have fixed capacity limits (expandable by model upgrade)
Feature-by-Feature Comparison
| Feature | 3CX | Yeastar P-Series |
|---|---|---|
| Call queues & ACD | Advanced (multi-strategy, SLA, callbacks) | Standard (basic queue strategies) |
| Wallboards | Built-in real-time wallboards | Basic dashboard (improving) |
| CRM integration | Native (Salesforce, HubSpot, Zoho, etc.) | API-based (growing ecosystem) |
| Call recording | Built-in with search | Built-in with search |
| Video conferencing | WebRTC (up to 250 participants) | Built-in (up to 24 participants) |
| Mobile app | 3CX App (iOS/Android) | Linkus UC (iOS/Android) |
| Auto-provisioning | Supports major brands | 400+ models, zero-touch |
| IVR / auto-attendant | Multi-level IVR | Multi-level IVR |
| Fax support | T.38 fax-to-email | T.38 fax-to-email |
| API / webhook support | REST API + webhooks | REST API + AMI |
| Admin interface | Powerful but complex | Clean and intuitive |
| Remote workers | Excellent (SBC built-in) | Excellent (Linkus Cloud) |
Licensing & Cost Comparison
The cost models are fundamentally different. Understanding this is critical for making the right onsite PBX comparison decision.
| Cost Factor | 3CX | Yeastar |
|---|---|---|
| Licence model | Annual subscription | Perpetual licence + optional maintenance |
| Pricing basis | Simultaneous calls (not users) | Per-user capacity of appliance |
| Small team (10 users) | R 12,000 – R 18,000/year | R 15,000 – R 22,000 once-off |
| Medium team (50 users) | R 25,000 – R 45,000/year | R 35,000 – R 55,000 once-off |
| Hardware required | Any Linux/Windows server | Purpose-built Yeastar appliance |
| SIP phones | Any SIP phone | Any SIP phone (400+ auto-provisioned) |
| Ongoing costs | Annual renewal + SIP trunk | Optional maintenance + SIP trunk |
Key insight: For businesses under 20 users who plan to keep their PBX for 3+ years, Yeastar's perpetual licence often delivers a lower total cost of ownership. For larger call centres where per-simultaneous-call pricing is more efficient, 3CX can be more cost-effective.
Deployment & Infrastructure
3CX Deployment
- Install on a dedicated Linux or Windows server (on-premise or cloud VM)
- Requires a reliable business internet connection for SIP trunk connectivity
- SBC (Session Border Controller) is built in for remote worker connectivity
- Can be virtualised on VMware, Hyper-V, or KVM
Yeastar Deployment
- Deploy the purpose-built P-Series appliance (P550, P560, P570) in your server room or comms cabinet
- Connect to your network switch and business internet for SIP trunking
- Phones auto-provision when connected to the same network
- Linkus Cloud Service enables remote workers without VPN
Ideal Use Cases: Which Business Fits Which PBX?
| Business Type | Recommended PBX | Why |
|---|---|---|
| Call centre (20+ agents) | 3CX | Advanced queue management, wallboards, CRM pop-ups |
| Sales team with CRM | 3CX | Native CRM integrations, click-to-call, call logging |
| Law firm / accounting practice | Yeastar | Simple management, professional features, low maintenance |
| Medical practice | Yeastar | Reliable, easy to manage, built-in call recording for compliance |
| Small office (5–20 staff) | Yeastar | Lower cost, plug-and-play, minimal IT overhead |
| Hotel / lodge | Yeastar | Built-in hotel PBX mode with wake-up calls and room status |
| Multi-branch business | Either (depends on scale) | Both support inter-branch dialling and centralised management |
| Hybrid office (remote + onsite) | Either | Both offer mobile apps and remote worker support |
Hybrid & Cloud Options
Both platforms support hybrid PBX configurations. This means you can keep the core PBX hardware on-site for reliability while enabling remote workers through cloud-based softphone apps.
Read our full guide: Hybrid PBX Systems: Combining Onsite Hardware with Cloud Flexibility.
If your business is considering a full move to the cloud, SureTel also offers hosted PBX systems that eliminate hardware entirely. Many businesses start with onsite and migrate to cloud as their needs evolve.
SureTel's Dual-Vendor Approach
Unlike providers locked into a single vendor, SureTel deploys both 3CX and Yeastar. This means we recommend the platform that genuinely fits your business — not the one that pays us the highest margin.
Our approach:
- Assess — We analyse your call volumes, team structure, CRM requirements, and growth plans
- Recommend — We recommend 3CX, Yeastar, or a hybrid approach based on your specific needs
- Deploy — We handle installation, phone provisioning, number porting, and call flow configuration
- Support — Ongoing management, firmware updates, and priority technical support
See our full detailed PBX comparison for technical specifications and deployment options.
Decision Framework: How to Choose
Use this quick framework to guide your decision:
| Question | If Yes → Choose |
|---|---|
| Do you run a call centre or sales team with queues? | 3CX |
| Do you need native CRM integration (Salesforce, HubSpot)? | 3CX |
| Do you want the lowest possible total cost of ownership? | Yeastar |
| Do you prefer plug-and-play with minimal IT overhead? | Yeastar |
| Do you need hotel/hospitality PBX features? | Yeastar |
| Do you want to run the PBX on your own Linux server? | 3CX |
| Do you need video conferencing for 50+ participants? | 3CX |
Still not sure? That's exactly what SureTel's onsite PABX systems team is here for. We'll assess your requirements and recommend the right platform — no guesswork, no bias.
Ready to upgrade your business phone system? View our detailed PBX comparison or request a free consultation from SureTel's voice over IP engineering team.