Pawan,Either you can set up a LDAP (the most convenient option) or a user has to manually add a contact to the presence enduser webpage to add a proper contact with presence info.Obviously the LDAP is the most convenient way.

Hi Pawan,Could you please tell me what kind of functionality you seek for? It is not clear from the notes.Presence is not integrated with the LDAP server, so what kind of directory you want to use?