Yeastar FXS/FXO Moduler SO module adds an FXS and FXO port to compatible Yeastar IP PBX products.
• Module with 1 FXS and 1 FXO port
• Unique PSTN fallback function
• Make/receive calls even during a system power breakdown
• Can be used in a wide variety of Yeastar IP PBX products
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