Hi, we have some german DID-Number we used with Asterisk (PBXes) to make Call Thru. We called the number, we heard the dial tone, number entered and closed with "#" and the call was set up. It was very easy. I have read this article https://sites.google.com/a/3cx.com/3cx-wiki/documentation/architecture/inbound-calls It helps me not really. Have somebody some experiences how to make it in the vers. 11. The outbound call should use the same outbound call rules as the internal extensions. Thank you very much for the help. Best regards I.