Do some research, read some articles. I found this[^] using Google, it may be more than you are looking for but it should help. Never underestimate the power of human stupidity RAH

ok man thnx alot for ur help

here is something that might help http://data.getafreelancer.com/project/411453/PBX%20VOIP.doc[^] http://www.getafreelancer.com/projects/Java-XML/PBX-VOIP-Asterix.html[^] Let there arise out of you a band of people inviting to all that is good, enjoining what is right, and forbidding what is wrong: They are the ones to attain felicity. Āli-'Imrān (The Family of Imran), 104.