6bf131c7__x____About_Licenses___DocWiki__Description
[License] maxstd [Description] 
The maxstd license denotes the maximum number of standard (ad hoc) voice, web, or video licenses that can be used on this particular system, due to system restraints. If the stdvoiceconf, webconf, or stdvideoconf license count exceeds the value of the maxstd license, the system uses the value of the maxstd license instead.
Cisco Unified MeetingPlace Express, Release 2.x -- About Licenses - DocWiki