Yeastar O2 Module 2FXOA module with 2 FXO ports to terminate two analog PSTN(POTS) lines. It can be used in MyPBX SOHO, MyPBX Standard, MyPBX Pro, MyPBX E1. MyPBX E1 Plus, MyPBX Enterprise, and TDM800 Card.Also CheckYeastar P550 VoIP PBX Phone SystemTelephony ModulesYeastar S50 – S-Series VoIP PBXYeastar S300 300 Users 60 Concurrent Calls Modular IP PBXYeastar S100 – S-Series VoIP PBX Phone System
