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 P560 IPPBX Read more Yeastar, P-Series IPPBXYeastar P-Series P550 IPPBX Read more Yeastar, P-Series IPPBXYeastar P-Series P570 IPPBX Read more Yeastar, P-Series IPPBX, S-Series IPPBXLinkus Client User License Read more Yeastar, Yeastar ModuleYeastar SO Module (1 FXS and 1 FXO) Read more Yeastar, Yeastar ModuleYeastar 4G LTE Module Read more Yeastar, S-Series IPPBXYeastar S100 IPPBX System Read more Yeastar ModuleYealink EX08 Expansion Board