Sono disponibile le trial (180 giorni) di Microsoft Office Communications Server 2007 RTM, di seguito vi lascio i link per il download:
Microsoft Office Communications Server 2007 Trial Downloadhttp://www.microsoft.com/downloads/details.aspx?FamilyID=663e5ef7-2288-46b0-9142-b2135a8fbdb9&DisplayLang=en
Microsoft Office Communicator 2007 Trial Downloadhttp://www.microsoft.com/downloads/details.aspx?familyid=7F5AB627-2D34-470D-9393-8B3EDE6FE3C4&displaylang=en