Hello I testing the connect to ipAustria. It´s a VOIP Provider I have one Login and all extension from my telephone number will be routing to the 3CX. How have I set the VOIP Provider in 3CX v12? I can only add one Provider with the same Authentication ID. So I have to set the main NUmber: 07207255 and want to have 3 extension inside: 07207255 - 120 07207255 - 121 07207255 - 122 I guess I have to set the DID? Thank you!