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Session Border Controllers
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- Telephony Interface
- FXO - Optional (YR-O2)
- FXS - Optional (YR-S2)
- GSM - Optional (YR-GSM)
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- Max Ports: 1 - Ports (Max) or 2 - Ports (Max)
Yeastar 1GSM port module
Yeastar GSM, PBX GSM Module with antenna - GSM
- Voice Call: 2G Voice Call (GSM Module), 2G/3G Voice Call (3G Module)
- SIM Card: 2G/3G/4G SIM Card (Backward Compatible)
- Supported Model: S412, S20, S50, S100, S300, P550, P560, P570
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Yeastar O2 2FXO port module
Yeastar O2, PBX Module 2 FXO Ports - O2
- Ports: 2 RJ11 FXO Ports
- Supported Model: S412, S20, S50, S100, S300,P550,P560,P570
- Ring Frequency Detection: 15~50 Hz
- Ring Voltage Detection: 30+ VRMS (depend on the FXO mode)
- Termination: PSTN Lines
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Yeastar S2 2FXS port module
Yeastar S2, PBX Module 2 FXS Ports - S2
- Port: 2 RJ11 FXS Ports
- Supported Model: S412, S20, S50, S100, S300, P550, P560, P570
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Yeastar SO 1FXS + 1FXO Port Module
Yeastar SO, PBX Module 1 FXS and 1 FXO - SO
- Port: 1 FXO RJ11 Port + 1 FXS RJ11 FXO Port
- Supported Model: S20, S50, S100, S300, P550, P560, P570
- FXO Ring Frequency Detection: 15~50 Hz
- FXS Ring Frequency: 25 Hz
- Termination: PSTN lines and Analog Telephone / Fax Machine
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