[Freeswitch-users] Open Source Question

Hi all, Hope this question is not so OT. I've made a PBX, FS based, writing functions with XML and Lua, for a customer. FS and all its components are based on many open source licenses, so I can't sell this software. Here my question: can I sell the solution I've made? Can I sell my particular configuration? If the answer is 'No', can I mantain intellectual property of my work? I'd like to avoid that a customer copy 'my' files and sell the service. Thanks for your help.