Yeastar P520 – P-Series IP PBX System

Technical Specifications

• Users: Up to 50

• Concurrent Calls: Up to 25

• VoIP Trunks: Unlimited

• Analog/BRI/GSM Ports: Via expansion modules

• Network Interfaces: 2 × Gigabit Ethernet ports (LAN/WAN)

• USB Ports: 1 × USB 3.0

• Storage: 64GB SSD

• Power Supply: 12V DC, 2A

• Mounting: Desktop or rackmount

• Operating Temperature: 0°C–40°C

Yeastar P550 – P-Series IP PBX System

Technical Specifications

• Users: Up to 50

• Concurrent Calls: Up to 25

• VoIP Trunks: Unlimited

• FXS/FXO/BRI/GSM Modules: Supported (via expansion slots)

• Network Ports: 2 × Gigabit Ethernet (LAN/WAN)

• USB Ports: 1 × USB 3.0

• Storage: 64GB SSD

• Power Supply: 12V DC, 2A

• Mounting: Desktop or rackmount

• Operating Temperature: 0°C–40°C

Yeastar S20 – S-Series VoIP PBX for Small Business

Technical Specifications

• Users: Up to 20

• Concurrent Calls: Up to 10

• VoIP Trunks: Unlimited

• FXS/FXO Ports: 0–4 (via optional modules)

• BRI Ports: 0–2 (via optional module)

• GSM/3G/4G: 1 channel (via optional module)

• LAN/WAN Ports: 2 (10/100 Mbps)

• USB Ports: 1

• Storage: 8GB SD card

• Power Supply: 12V DC, 1A

• Operating Temperature: 0–40°C

• Mounting: Desktop or wall-mountable

Yeastar S50 – S-Series VoIP PBX Phone System

Technical Specifications

• Users: Up to 50

• Concurrent Calls: Up to 25

• VoIP Trunks: Unlimited

• Module Slots: 4 (for FXS, FXO, BRI, GSM/3G/4G)

• Network Interfaces: 2 × 10/100 Mbps Ethernet ports (LAN/WAN)

• USB Ports: 1 × USB 2.0

• Storage: 8GB SD card (expandable)

• Power Supply: 12V DC, 1A

• Mounting: Desktop or wall-mount

• Operating Temperature: 0°C–40°C