6bf131c7__x____About_Licenses___DocWiki__Description
[License] languages [Description] 
The languages license enables the simultaneous use of up to four supported languages on a system. If you do not install the languages license, you can enable only one language. The languages license is a non-counted license, which means it is either set to Yes or No. Note: The languages license is not required for ad hoc meetings because there are no voice prompts and ad hoc meeting users do not access the End-User Interface.
Cisco Unified MeetingPlace Express, Release 2.x -- About Licenses - DocWiki