General Features

• Model: Yeastar O2 Module
• Type: FXO (Foreign Exchange Office) module for PSTN line connectivity
• Compatibility: Designed for Yeastar S-Series IP PBX systems (S20, S50, S100, S300)
• Ports: Provides 2 FXO ports for connecting analog Public Switched Telephone Network (PSTN) lines

Telephony Features

• Signaling Support: Supports analog line signaling for seamless PSTN integration
• Caller ID Detection: Compatible with DTMF and FSK standards for incoming call identification
• Failover Support: Ensures continuity of service by automatically routing calls through PSTN in case of VoIP system failure

Voice Features

• Voice Codecs: Supports multiple codecs for high-quality audio:
  • G.711 (a/µ law)
  • G.722
  • G.729A
  • G.726
  • GSM
• Audio Enhancements:
  • Echo cancellation
  • Noise suppression
  • High-definition audio clarity

Integration and Usability

• Plug-and-Play Installation: Quick setup with Yeastar S-Series PBX systems
• Hot-Swappable Design: Allows module addition or replacement without system downtime
• Management Interface: Fully configurable via Yeastar’s web-based management portal
• Hybrid Connectivity: Enables integration of analog PSTN lines into modern VoIP communication systems

Electrical Specifications

• Power Supply: Draws power directly from the Yeastar PBX system
• Operating Voltage: Standard PSTN line compatibility

Physical and Environmental Specifications

• Form Factor: Compact modular design
• Operating Temperature: 0°C to 40°C (32°F to 104°F)
• Storage Temperature: -20°C to 70°C (-4°F to 158°F)
• Humidity: 10% to 90% non-condensing

Key Benefits

• PSTN Backup: Ensures uninterrupted communication by integrating analog lines as a fallback for VoIP
• Cost-Efficiency: Adds PSTN connectivity without requiring additional standalone equipment
• Flexibility: Supports hybrid setups combining analog and IP communication systems
• Scalable Design: Ideal for small-to-medium businesses expanding their telephony infrastructure