Hello list... We have an ISA Array with two machines both running the Gatekeeper service. When setting NetMeeting to connect to the array via DNS round-robin it may occur that some users are registered with the first and others with the second server. I thought the ISA array gatekeepers would exchange their registration database via active directory but it seems that this is not the case. Instead, users who are connected on different Gatekeepers within the same ISA array are not able to find each other ;-( I am new into H.323 topics. Does anyone know if it's possible to replicate the user information inside the array? Or to use call routing rules to get around this problem? Greetings Christian