Openvox FXO100 Single Channel FXO Module for A400 A800 A1200Model: FXO100Retail Price: $45 Overview The FXO100 FXO module allows OpenVox analog A400 A800 A1200 Series cards to terminate analog telephone lines (POTS). Because of the modular design, users can activate additional ports at any time with more FXO100 or FXS100 modules. The FXO100 module passes all the call features any standard analog telephone line will support. Functions: FXS Foreign Exchange Station FXO Foreign Exchange Office An FXS device