You have to contact your reseller and ask them to send it to you, in addition to any hotfixes and the current loadware. You have to have software assurance through Unify in order to be entitled to it as far as I know. The .iso is split between 2 archive files that have to be unzipped into the one .iso - the files are very large.
Don Bruechert, Voice Comm Analyst II
CareTech Solutions @ Holy Family Memorial
Manitowoc, WI, USA