To use free PBXes might have many advantages over expensive amd even hard to use solutions. But if you find a reliable one your costs will be cleared in a time. For example to forward incoming calls and other softphone features I have already tried out an SDK and used its sample program: voip-sip-sdk.com/p_350-forward-incoming-call-voip.html (I don’t want to advertise just give an example) and it’s still working without problems. But if you use entirely free solutions it’s probable that you will find yourself in a very difficult situation. How is it with your Free PBX? Could you provide me with a decisive explanation? Thank you.