hello friends, i just want to know the basic architecture of the ser in ascii diagram how does this maintain registar ,redirect ,location and the proxy servers. as for as my undestanding i thought redirect+registar+location | | ua--> proxy--|-------->ua does this is correct please guide me with regards rama kanth __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail