Hi, I am using Elastix, to call managements, and i am using C#.net application to manage asteisk through Asterisk.NET C# class library, i can connect succesfully with Asterisk server, and can make the calls in internal Extensions. using ConnectionManager, but i can not make any trunk calls outside, just it says good bye message.. This is the code i am using string address = "192.168.2.164"; int port = 5038; string user = "admin"; string password = "elastix456"; ManagerConnection manager = new ManagerConnection(address, port, user, password); manager.Login(); OriginateAction oc = new OriginateAction(); oc.Context = "Default"; oc.Priority = 1; oc.Channel = "SIP/114"; oc.CallerId = "114"; oc.Exten = "115"; //but when i use External trunk number it says good bye msg. oc.Timeout = 3000; ManagerResponse originateResponse = manager.SendAction(oc, oc.Timeout); MessageBox.Show("" + originateResponse.ToString()); i expecting help to Dial trunk calls.. Thanks, Senthil.