When adding an analog board (A200) to the board list, you are prompted to tell the number of FXO interfaces and the number of FXS intefaces. If you only have one type of interface, you have nothing to worry about.

If you have a mix of FXO and FXS interfaces on your board, you must know that after the Quick Setup, the FXO interfaces will be given the first wanpipe interface IDs and the FXS interfaces the last. For example, if you have a board with 2 FXO and 2 FXS, the wanpipe interface IDs in the pstn-config.xml file will be 0 and 1 for the FXO, 2 and 3 for the FXS.

If you have put the FXO module on your card in SLOT A and the FXS module in SLOT B, the default configuration will match you board's configuration (see A200 installation guide for slots position on the board).

If you have inverted this order for the modules on you board, simply go to the "Configuration/PSTN Config" tab in the WebUI after the Quick Setup. Find you board in the Boards section of the tree view and manually change the Wanpipe Interface number of each interface: 0 and 1 for FXO becomes 2 and 3, 2 and 3 for FXS becomes 0 and 1 respectively.