Yeastar O2-MODULE 2 FXO ports to add analogue PSTN (POTS) lines to Yeastar VoIP PBX
2 FXO ports for Yeastar S- and P- Series PBX, to terminate two analog PSTN (POTS) lines.
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2 FXO ports for Yeastar S- and P- Series PBX, to terminate two analog PSTN (POTS) lines.