The Yeastar P550 handles 50 users and 25 concurrent calls, with four module bays for up to 8 analog or BRI ports and 4 cellular trunks. It suits mid-sized companies, schools and warehouses that rely on both landlines and mobile SIMs.
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The Yeastar P550 is a phone system for companies of up to 50 people, handling 25 calls at once. It is the step up for businesses that have outgrown a small-office PBX and want an extension for every employee, plus landlines and mobile SIMs, on one platform. The line ports sit on the front panel, and the unit works on a desk or in a network rack.
Yeastar P550 capacity and ports
Inside are four module bays, and each module adds two ports to the front panel. Fully loaded, the official figures are:
- 50 users and 25 concurrent calls.
- 8 FXS ports for analog handsets and fax machines.
- 8 FXO or BRI ports for landlines.
- 4 3G/4G ports for mobile SIMs.
- One WAN port, one LAN port and a USB slot for storage.
Four SIM trunks next to your landlines
Many Saudi businesses call customers on mobile numbers more often than on landlines. The P550 accepts up to four cellular modules, so you could run two STC SIMs, one Mobily and one Zain, and let outbound routes pick the right SIM for each call.
Need landlines too? Give one or two bays to O2 or B2 modules and use S2 modules for analog handsets in the rest. SIP trunks need no modules at all, and Yeastar says its systems are tested with more than 210 providers.
Fast setup and USB storage
The Yeastar logo on the front hides an NFC tag: tap an NFC phone to set the network parameters without a laptop. The front USB slot takes a flash drive for call recordings, voicemail and logs. Rack brackets and a grounding stud are included, so the P550 can sit next to your switch in the comms room.
Linkus apps and front desk tools
Every user gets Linkus for mobile, desktop and web, so extensions ring wherever staff are and colleagues can chat in the same app. Reception and customer service teams get a multi-level IVR, call queues, call recording and conference rooms. Some features depend on the license plan.
Who the P550 is for
- Mid-sized companies with 20 to 50 staff.
- Private schools: extensions for administration and accounts, and an IVR for parents.
- Warehouses and distribution companies whose supervisors call drivers on mobile numbers.
- Mid-sized clinics and small medical centers.
Compatibility
Yeastar auto-provisions more than 500 IP phone models, and the P550 integrates with Microsoft Teams and CRMs including Zoho, Salesforce, HubSpot and Odoo.
P550 or P560?
The P560 starts at 100 users and 30 calls and reaches 200 users and 60 calls with a D30 module, and it adds an E1 option through the EX30 board. Analog and cellular port maximums are the same on both models: 8 and 4. Choose the P550 if your team will stay at 50 or fewer and you have no E1 line. Choose the P560 if you expect to pass 50 users.
Frequently Asked Questions
How many SIM cards does the Yeastar P550 take?
Up to 4, through four GSM, 3G or 4G LTE modules. The four bays are shared, so each cellular module uses a bay that could hold analog ports.
Does the P550 support E1?
No. The P550 has no E1/T1/J1 option. For an E1 line, choose the P560 with an EX30 board.
Can the P550 grow beyond 50 users?
Yeastar's guide lists no D30 support for the P550, so capacity stays at 50 users and 25 calls. For up to 200 users, choose the P560.
Specifications
- Model: P550
- Series: Yeastar P-Series Appliance Edition
- Users: 50
- Concurrent calls: 25
- Max FXS ports: 8
- Max FXO / BRI ports: 8
- Max 3G/4G ports: 4
- E1/T1/J1 ports: Not supported
- Module bays: 4 internal (S2, O2, B2, SO, GSM, 3G, 4G LTE)
- Expansion boards / D30: Not supported
- RJ11 ports: 8 on the front panel (FXS, FXO or BRI depending on module)
- Network ports: 1× WAN, 1× LAN
- Storage: USB slot for a flash drive (recordings, voicemail, logs)
- Other interfaces: NFC tag for network setup from a phone, reset button, antenna socket, power switch, protective earth
- LED indicators: System, Power, plus 8 RJ11 port status LEDs
- Power: Supplied power cord to rear inlet
- Mounting: Desktop (4 rubber feet) or 19-inch rack
- Operating environment: Below 40°C per installation guide
- In the box: P550 unit, power cord, Ethernet cable, 2 rack-mount kits, grounding stud and nut, 4 rubber feet, quick installation guide
Features
- 50 users and 25 concurrent calls: enough for a mid-sized company or a full school administration.
- Four module bays: up to 8 FXS or 8 FXO/BRI ports, so analog handsets and landlines share one system.
- Up to 4 3G/4G ports: run SIMs from more than one carrier and spread outbound calls across them.
- Front USB slot: store recordings, voicemail and logs on a USB flash drive.
- Desktop or 19-inch rack mounting: rack brackets and a grounding stud come in the box.