Paging is similar to the intercom concept; however, it provides only a one-way automatic path for communication. This is useful to allow broadcast messages, such as emergency notifications or to notify employees of holding calls.
The CUCM/CME paging system works by designating an ephone-dn as a paging number. Calls to the DN of this ephone-dn broadcast to the IP phones that are assigned to this paging group. The figure below illustrates this concept.
As shown in the figure above, calls to DN 5555 page the three phones assigned to that paging group. Calls to 5556 do the same for the paging group 81.
In our demonstration, JOSECK (1000), and THE FINANCE MANAGER (1010) belongs to the paging group of 80 with the DN number of 7070. MOKAYA (1001) and MANANI belong to the paging group of 81 with the DN number of 7071. JOSMO (1003) and MOKAJOS (1004) belong to the paging group of 82 of DN Number 7072.
We will also have one Paging group of 83 of DN number 7073 which will page all the phones in the organization.
A call to 7070 pages JOSECK (1000), and THE FINANCE MANAGER (1010) while a call to 7071 pages MOKAYA (1001) and MANANI (1002). A call to 7072 pages both JOSMO (1003) and MOKAJOS (1004) at the same time. A call to 7073 pages all phones.
In this demonstration JOSECK (1000) is going to call 7073 which will page all the phones in the system.