Yeastar S2 Module – 2-Port FXS Expansion for S-Series and P-Series PBX

The Yeastar S2 Module is a 2-port FXS (Foreign Exchange Subscriber) expansion module designed to connect analog devices such as telephones, fax machines, or point-of-sale terminals to Yeastar’s modular S-Series and P-Series VoIP PBX systems. It enables businesses to integrate existing analog equipment with modern VoIP communication platforms, providing flexibility and cost-effective scalability.

Product Features

Analog Device Integration

The S2 Module allows seamless connection of two analog devices to the PBX system, enabling continued use of legacy telephones, fax machines, or other analog equipment within a VoIP environment.

Modular and Scalable

Designed to fit into Yeastar’s modular PBX systems, the S2 Module offers scalable expansion options based on business requirements, allowing easy upgrades and adjustments.

Wide Compatibility

Compatible with a range of Yeastar PBX models, including the S20, S50, S100, S300, S412, and P550, P560, and P570 series, providing versatile deployment across different systems.

High-Quality Audio

Supports clear and reliable voice transmission, ensuring excellent call quality for connected analog devices.

Simple Installation

The module is easy to install and configure, integrating directly into available PBX slots without complex setup procedures.

Product Specifications

• Ports: 2 x FXS (RJ11)
• Compatible Systems: Yeastar S-Series (S20, S50, S100, S300, S412), P-Series (P550, P560, P570)
• Ring Frequency: 25 Hz
• Ring Load: 840 Ohm
• Loop Impedance: 2000 Ohm
• Loop Current: 20 mA
• Off-hook Voltage: 11V
• Ring Voltage: 85V
• On-hook Voltage (tip/ring): 48V
• Off-hook Current: 10 mA
• Terminating Impedance Option: 600 Ohm
• Maximum Cable Length: 1500 meters
• Dimensions: 12.7 cm x 10.2 cm x 2.54 cm

The Yeastar S2 Module provides a practical and efficient way to extend analog connectivity within a modern VoIP PBX system, making it ideal for businesses transitioning to IP telephony while retaining legacy devices.