O2 Module (2 FXO Ports):

Yeastar

O2 is a module with 2 FXO ports to terminate two analog PSTN (POTS) lines.It can be used in MyPBX SOHO, MyPBX Standard, MyPBX U100, MyPBX U200, MyPBX U5XX, and S-Series VoIP PBX.

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