You need cals for each server. So if you have 25 users and 3 physical windows servers, one of which has exchange then you would need 75 Windows Cals, and 25 Exchange cals. ISA is licensed per processor. S -----Original Message----- From: Andrew English [mailto:andrew@xxxxxxxxxxxxxxxxxxxxxx] Sent: Friday, December 09, 2005 11:59 AM To: ISA Mailing List Subject: Importance: High http://www.ISAserver.org I have a question regarding CALs. Every place I have worked at already have their CALs for their Windows products, but now I am pricing systems out for a company who upgrading from a single network system to a multiple network system. If I have box for each software, ISA Server, Exchange, and AD do I need to install Calls for each of them or since the users login to AD and Exchange I just need to get Calls for both systems? Also do I need Windows Server Calls for a Exchange box on top of the Exchange Calls? Andrew ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Visit TechGenix.com for more information about our other sites: http://www.techgenix.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: isalist@xxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx