This MIB module is intended for the management of  
'Closed User Group(CUG)' in Cisco ATM switches.  
        
This MIB definition is based upon 'Closed User Group'
recommended by International Telecommunication Union(ITU). 
        
The CUG supplementary service enables users to form groups,
to and from which access is restricted. A specific user may
be member of one or more closed user groups. Members of a
specific closed user group can communicate among themselves
but not, in general, with users outside the group. Specific    
CUG members can have additional capabilities that allow 
them to originate calls to destinations outside the group,
and/or to receive calls from outside the group. Specific
CUG members can have additional restrictions that prevent
them from originating calls to other members of the CUG,
or from receiving calls from other members of the CUG.
        
ITU-T Q.2955.1 Stage 3 description for community of interest
supplementary services using B-ISDN Digital Subscriber
Signalling System No.2(DSS 2): Closed User Group(CUG).