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MOlOROLA INC. Technical Developments Volume 15 May 1992
CLI FUNCTIONS FOR A PAGING TERMINAL
by James Hymel
Subscribers to a paging service may elect to identify specific CL1 (Caller Line ID) numbers and assign to those numbers a specific lkvel of paging priority. Thus pages received from one particular telephone number automatically receive a higher priority in the paging sys- tem while calls originating! from other telephone num- bers may receive a lower level of priority. Calls received from telephone numbers which have not been identi- tied by the subscriber will receive a default level of pag- ing priority.
Figure 2 is a flowchart describing the operation of a paging terminal utilizing CL1 based priority paging.
Call barring is a feature that a subscriber may choose to activate in the "off hours" of the day, say for example: 7pm to 6am. Norm?lly, during this call barring period, all page attempts to that particular subscriber will be rejected by the paging terminal. The subscriber may elect, however, to identify different CL1 (CALLER LINE ID) numbers which will be allowed to initiate pages during the call barring period. Thus pages received from the "authorized" CL1 telephone numbers for this subscriber will be accepted by the paging system and all other pages received for this subscriber will be rejected.
Additionally, the paging system administrator may elect to define specific CL1 telephone number as "nui- sance callers" and can define these CL1 teleph...