Yeastar O2 Module (2FXO) YST-O2

• Ports: 2 RJ11 FXO Ports
• Supported Model: S412, S20, S50, S100, S300
• Ring Frequency Detection: 15~50 Hz
• Ring Voltage Detection: 30+ VRMS (depend on the FXO mode)
• Termination: PSTN Lines
• Echo Cancellation: Support