agian i can recive incomming calls but i cant make out calls and what i need is some thing i dont undertand it which is
"" sending the required SIP headers"""
Your link is incomplete.
However: Either Your provider may assist You or - based on a documentation from Your provider - You may request professional support If You can’t get it running yourself …
Who should be able to help You without any useful documentation (link incomplete, I told You) ?
Hence Your provider requires special SIP-Headers it’s Non-Standard and therefor the exact knowledge of the required headers is necessary to assist You …