Think you need to actually describe what you want to do, what you have tried, what you hope to achieve etc etc...
You have posted what looks like a very vague statement.
For exapmple, I need to set up a SIP trunk from an Asterisk server, to xyz. I have the trunks set up, and they are connecting, but I am unable to get any audio.
I don't use Asterisk, but doesn't mean I couldn't help on question like.
The more specific your question, the better the answer you will get....
Only the truly stupid believe they know everything.
Stu.. 2004