6bf131c7__x____About_Licenses___DocWiki__Description
[License] secondaryservers [Description] 
The secondaryservers license determines whether a connection can be established to the secondary server. This is used for segmented meeting access (SMA). The secondaryservers license can also be used for larger systems where web conferencing needs to run on the secondary server so that voice and video conferencing can be scaled on the primary server.
Cisco Unified MeetingPlace Express, Release 2.x -- About Licenses - DocWiki