This TS describes the Supplementary Services belonging to the group "Community Of Interest Supplementary Services".
This group includes one Supplementary Service: Closed User Group.
The Closed User Group (CUG) Supplementary Service enables subscribers, connected to a PLMN and possibly also
other networks, to form closed user groups (CUGs) to and from which access is restricted. A specific user may be a
member of one or more CUGs. Members of a specific CUG can communicate among each other but not, in general,
with users outside the group.
The ability to set up emergency calls remains unaffected.
full Table of Contents for TS 22.085 Word version: 15.0.0