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, Yeastar ModuleYeastar S2 Module (2 FXS) Read more Yeastar, Yeastar ModuleYeastar 4G LTE Module Read more Yeastar ModuleYealink EX08 Expansion Board Read more Yeastar, Yeastar ModuleYeastar EX30 Expansion Board w/ E1/T1/PRI Port Read more Yeastar, P-Series IPPBX, S-Series IPPBXYeastar Remote Access Service Read more Yeastar, P-Series IPPBX, S-Series IPPBXLinkus Client User License Read more Yeastar, P-Series IPPBXYeastar P-Series P570 IPPBX