Previous Product Next Product Yeastar O2 Module (2FXO) Yeastar O2 Module (2FXO) is a module with 2 FXO ports to terminate two analog PSTN(POTS) lines. Categories: Yeastar, Yeastar Module Description Description Opens in a new window Tweet This Product Opens in a new window Share on Facebook Opens in a new window Mail This Product Related products Read more Yeastar, P-Series IPPBXYeastar P-Series P550 IPPBX Read more Yeastar, P-Series IPPBX, S-Series IPPBXLinkus Client User License Read more Yeastar, S-Series IPPBXYeastar S100 IPPBX System Read more Yeastar, P-Series IPPBXVideo Conferencing License For Yeastar P-series? Read more Yeastar, Yeastar ModuleD30 – DSP module for expanding capability Read more Yeastar, Yeastar ModuleYeastar 4G LTE Module Read more Yeastar, Yeastar ModuleYeastar EX30 Expansion Board w/ E1/T1/PRI Port Read more Yeastar, Yeastar ModuleYeastar S2 Module (2 FXS)