Hi As a new member of the forum, I am curious to know your experience with FXO/FXS cards. I have a SPA3102 and have configured it to work with FS, but it feels a bit like I am trying to make a square peg fit a round hole. I am hoping to implement FS at a business which currently has 4 POTS lines and would prefer to use an internal IDE card for the job of integrating these phone lines into FreeSwitch. Has anyone got some advice on which cards I should be looking at that just "work" with FS? What about echo cancellation - is that something I should just cater for or does it depend on the client situation? What about software cancellation? This seems like one of those times when too much choice is a bad thing and I need some guidance on what has worked for you. All advice would be greatly appreciated. Regards