Yeastar SO Module
An expansion module featuring one FXO port and one FXS port to offer a unique PSTN failover function, enabling users to make and receive calls even when the system powers down.
Yeastar SO module is a module with one FXO port and one FXS port to offer a unique PSTN failover function, enabling you to make/receive calls even when system powers down.
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Key Features and Benefits:
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PSTN Failover Function: Combines one FXO port and one FXS port to ensure continuous call capabilities during power outages.
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Dual Line Termination: Supports termination for both PSTN lines and analog telephone or fax machines.
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Audio Enhancement: Includes built-in support for echo cancellation.
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Broad Compatibility: Compatible with Yeastar S20, S50, S100, S300, P550, P560, and P570 PBX systems.
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Technical & Physical Specifications:
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Ports: 1 FXO RJ11 Port + 1 FXS RJ11 Port.
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Ring Frequencies: FXO ring frequency detection of 15~50 Hz and FXS ring frequency of 25 Hz.
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Voltage & Impedance: Ring voltage of 85V with a 600 Ohm terminating impedance option.
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