Yeastar SO Module 1 FXS + 1 FXO Port Analog Module for S-Series PBX

The Yeastar SO Module is a compact analog expansion module designed to add one FXS and one FXO port to compatible Yeastar S-Series and MyPBX VoIP PBX systems. This plug-and-play module enables seamless integration of analog telephones, fax machines, and PSTN lines, enhancing the flexibility of your business communication infrastructure.

Advantages

Expand your PBX with two additional analog ports without replacing the main unit. Hot-swappable design allows installation without system downtime. Supports essential telephony features such as Caller ID, Polarity Reversal, and Disconnect Supervision for reliable analog connectivity.

Suitable for

• Small to medium businesses using Yeastar S-Series PBX (S20, S50, S100, S300) or MyPBX series
• Adding analog extensions for fax machines or legacy phones
• Connecting to PSTN lines for backup or hybrid deployments

Key specifications

• Module Type: Analog FXS/FXO Module
• Number of FXS Ports: 1
• Number of FXO Ports: 1
• Compatibility: Yeastar S-Series (S20, S50, S100, S300), MyPBX Series
• Interface: Internal Module Slot
• Hot-Swappable: Yes
• FXS Features: Caller ID, Polarity Reversal, Busy Tone Detection
• FXO Features: Loop Start, Disconnect Supervision
• Installation: Plug-and-Play
• Power Source: Powered by PBX system
• LED Indicators: Yes (Status)
• Operating Temperature: 0°C to 40°C (32°F to 104°F)
• Storage Temperature: -20°C to 65°C (-4°F to 149°F)
• Operating Humidity: 10% to 90% non-condensing
• Certifications: CE, FCC, RoHS

Recommendations

For optimal performance, ensure your Yeastar PBX firmware is up to date. This module is ideal for businesses needing a simple, cost-effective way to integrate analog devices into a modern VoIP environment.