Yeastar SO Module

S0 Module (1 FXS Port & 1 FXO Port):

Unique PSTN Fallback Function!  Make/Receive calls even when system power breaks down.

It can be used in MyPBX SOHO, MyPBX Standard, MyPBX Pro, MyPBX E1, MyPBX Enterprise, MyPBX U100, MyPBX U200, MyPBX U5XX, and TDM800 Card.

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