ETSI_0285_CUG_闭合用户群-课件（PPT-精）.ppt

* ETSI 0285 Closed User Group (CUG) Supplementary Services 刘云峰 Outline Definition Service description Normal procedures with successful outcome Exceptional procedures or unsuccessful outcome Interactions with other SS Definition CUG: Access is restricted Members of a specific CUG can communicate among each other but not, in general, with users outside the group. Service description CUG member: A user who has subscribed to the CUG SS CUG index: A value assigned by the network to identify a CUG CUG Interlock Code (IC): Is used by the network to identify CUG membership MS Network preferential CUG: It’s the nominated default CUG to be used when no explicit CUG index is received by the network suppress preferential CUG: A user action to prohibit the use of the preferential CUG Incoming Access (IA): MT call outside the CUG. Outgoing Access (OA): MO call outside the CUG. Service description suppress OA: A user action to prohibit the use of the OA subscription option Incoming Calls Barred Within A CUG (ICB): An access restriction that prevents a CUG member from receiving calls from other members of that group. Outgoing Calls Barred Within A CUG (OCB): An access restriction that prevents a CUG member from placing calls to other members of that group. CUG calls: A CUG call is a call which is restricted to a pre-defined group of users. Service description Emergency calls, SMS remains unaffected Each individual subscriber may be a member of a maximum of 10 CUGs Service description Provision Withdrawal, Activation, Deactivation, Invocation Normal procedures with successful outcome subscription options 1.CUG calls only 2.IA 3.OA 4.IO and OA 5.ICB 6.OCB MO CALL Normal procedures with successful outcome MT CALL Nor