http://www.kamailio.org/dokuwiki/doku.php/pseudovariables:1.5.x

In general, I think it would behoove you to have a read of:

http://www.kamailio.org/docs

before embarking on this project of yours.

You may also consider:

http://search.barnesandnoble.com/Building-Telephony-Systems-with-Openser/Fla...

It's a little dated at this point, but the fundamentals (such as the kind you're asking about) are still absolutely relevant.

Rajesh wrote:

Dear Experts, Iam configuring IMC and i would like to know what does the following line mean.

xdbg("script: message from [$fu] chatroom000 [$ru] msg [$rb]\n");

.I get error in this line when i start kamailio. what does $fu ,$ru , $rb mean.

Thanks