3CX is a powerful, open-standards software PBX that disrupts traditional VoIP pricing. Instead of paying per user, you pay for simultaneous calls. Enjoy enterprise-grade features, deep CRM integration, and omnichannel contact centre capabilities—whether hosted in the cloud or deployed on-premise.
3CX offers unparalleled value and flexibility. It is designed for businesses that want maximum feature sets without being penalised by expensive per-user monthly subscriptions as they scale.
From basic call routing to advanced contact centre operations, 3CX provides an all-inclusive feature set out of the box, managed through a single, intuitive web console.
Because 3CX is a software-based PBX, you aren't forced into a single deployment model. T2K VoIP can build the system exactly where you want it.
3CX licenses are traditionally billed annually based on Simultaneous Calls (SimCalls) rather than per user. Below are the three main feature editions available. T2K bundles these with secure SIP trunks and support for a complete solution.
| Features |
3CX PRO
For growing SMEs & call queues
|
3CX ENT/AI
Advanced routing & AI features
|
3CX ENT +
Premium enterprise & MS Teams
|
|---|---|---|---|
| Core & User Features | |||
| Apps, BLF, Directory & SIP Phones | ✓ | ✓ | ✓ |
| Auto Attendant, IVR & Ring Groups | ✓ | ✓ | ✓ |
| Video Conferencing Limit | 250 Users | 250 Users | 250 Users |
| Live Chat, SMS, MMS & WhatsApp | ✓ | ✓ | ✓ |
| Call Center & Integrations | |||
| Call Queues, Recording & Reports | ✓ | ✓ | ✓ |
| Barge In, Listen, Whisper & Callback | ✓ | ✓ | ✓ |
| Google Workspace & MS 365 | User Sync Only | Full Integration | Full Integration |
| Call Flow Designer & Skills-based Routing | — | ✓ | ✓ |
| AI & Transcription Features | |||
| AI Call Summary & Sentiment | — | ✓ | ✓ |
| AI Agents (Boss-Sec, Assistant, Receptionist) | — | ✓ | ✓ |
| Transcription Engine | — | 3CX Cloud Only | Google, OpenAI, or Onboard |
| Enterprise Features (Reserved for 16SC+) | |||
| MS Teams Direct Routing Integration | — | — | ✓ |
| Data Connectors, Grafana & PowerBI | — | — | ✓ |
| Inbuilt Failover & Multi-Tenant Support | — | — | ✓ |
| Get a Quote → | Get a Quote → | Get a Quote → |
3CX's server-side integration engine connects your phone system natively to the world's most popular business applications.
3CX disrupts the market for specific types of businesses, offering massive cost savings and workflow improvements.
| Feature | 3CX Phone System | Standard Hosted VoIP (e.g. Gamma Horizon) |
|---|---|---|
| Pricing Model | Simultaneous Calls (Unlimited extensions) | Strictly Per-User / Per-Month |
| SIP Trunk Flexibility | Bring Your Own SIP Provider (or use ours) | Locked to the vendor's network |
| CRM Integration | Deep, server-side (Automated logging) | Basic client-side (Click-to-dial mostly) |
| System Administration | Requires technical sizing and updates | Fully managed by the vendor behind the scenes |
| Omnichannel Support | Included (Live Chat, WhatsApp, SMS) | Usually voice-only, or requires expensive add-ons |
| Ideal Fit | Tech-savvy SMEs wanting rich features & low cost | Businesses wanting zero IT hassle and guaranteed SLAs |
Explore our deep-dive 2026 comparisons to see how 3CX stacks up against other leading phone systems in the UK market.
Common questions we receive about sizing, deploying, and using the 3CX PBX.
If the simultaneous call model doesn't fit your business, or you prefer a traditional managed carrier platform, consider these alternatives.
Stop paying expensive per-user licensing fees. Speak to T2K VoIP's certified 3CX engineers today. We'll help you accurately size your simultaneous call requirements, demonstrate the CRM integrations, and provide a transparent, no-obligation quote.
Your trusted technology partner.
