Description
Small businesses need reliable phone systems that grow with them—without complicated cloud contracts or expensive hardware. The Yeastar P550 IP PBX delivers exactly that: a powerful on-premise VoIP solution supporting 50 users and 25 concurrent calls right out of the box. Its modular design lets you mix analog, ISDN, and cellular trunks however you need, while Linkus UC clients keep your team connected from the office, home, or on the road. Simple to set up and packed with call-center and collaboration tools, it’s the smart choice for IT teams who want control, security, and real-world flexibility.
The Telecom Spot Expert Take
The Yeastar P550 hits the sweet spot for growing SMBs that have outgrown basic phone systems but don’t need the capacity of larger models. With 25 concurrent calls and four module slots, it gives you room to blend legacy lines with modern VoIP during transition—cutting costs and avoiding downtime. NFC quick-config and the clean web portal mean your IT team can be up and running in minutes instead of hours. Add in free call recording, omnichannel messaging, and tight Microsoft 365/CRM integrations, and you get enterprise features at a small-business price. In our view, it’s one of the most practical on-premise PBXs available for teams of 20–50 people who value reliability and total data ownership.
Key Features
- Scalable for 50 users and 25 concurrent calls – Handles everyday business traffic and grows with your team without extra licenses.
- Modular telephony ports (up to 8 FXS + 8 FXO/BRI + 4 cellular) – Connect analog phones, fax machines, ISDN lines, or add 4G backup for uninterrupted service.
- Linkus Unified Communications clients – Make and receive calls, join video meetings, send messages, and see presence from desktop, mobile, web, or Chrome extension—work anywhere.
- Built-in call center tools – Skill-based queues, wallboard monitoring, whisper/barge-in, and detailed reports help your team deliver faster, smarter customer support.
- Drag-and-drop Call Flow Designer – Build custom IVRs, routing rules, and auto-attendants in minutes—no coding required.
- Omnichannel messaging & CRM integrations – Connect SMS, WhatsApp, Facebook, Teams, Salesforce, Zendesk, and more so every interaction lives in one place.
- Enterprise-grade security – TLS/SRTP encryption, two-factor authentication, IP blocklists, and password policies keep your system protected.
- Easy management & storage – Gigabit Ethernet, USB SSD support (up to 2 TB), NFC tap setup, and intuitive web portal simplify daily operations for IT teams.
Technical Specifications
| Specification | Details |
|---|---|
| Users | 50 |
| Concurrent Calls | 25 |
| Call Center Agents | 50 |
| Max FXS Ports | 8 (optional card) |
| Max FXO/BRI Ports | 8 (optional card) |
| Max 3G/4G Ports | 4 (optional card) |
| Max E1/T1/J1 Ports | None |
| Telephony Module Slots | 4 |
| Ethernet Interfaces | 2 × 10/100/1000 Mbps (WAN + LAN) |
| USB Storage | 1 port (supports portable SSD up to 2 TB) |
| NFC Read/Write | Yes |
| Power Supply | AC 100-240V 50/60 Hz, 1.5A max |
| Dimensions (L × W × H) | 34 × 21 × 4.4 cm |
| Weight | 1.64 kg |
| Form Factor | 1U Rackmount |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| MTBF | ≥ 655,300 hours |
See Yeastar P-Series Datasheet for full spec