I am happy having 3CX arrived. But i have a problem with it. I have installed my server and correctly configured the SPA941. and they work well as a PBX intercom. But my biggest problem is when i tried to installed PSTN Gateway i'm having a trouble. I have followed the instructions on the web for Grandstream GWX4104 but when in the Call Progress Tone i cannot set due to my country is not on the list and i dont know where can i get those values. i tried 3amSystems but that wont give me the excact tones. i cant figured how to do it. But my system can get an incoming but no outgoing. Can somebody help me and explain it to me please ASAP. Thank you and more power.