Here are some more notes from my IIUC studies.  As always, corrections requested.

Paging

  • Broadcasts messages to a group for a one-way communication
  • Paging groups are used to limit which phones get the broadcast
  • Paging can be unicast or multicast
    • Unicast groups limited to 10 members
    • Multicast requires mcast support on the network
  • Paging configurations can be unicast, multicast, or multiple-group

!  Unicast Paging
!  When 1044 is dialed, ephone 1 is paged
R1(config)#ephone-dn 44
R1(config-ephone-dn)#number 1044
R1(config-ephone-dn)#paging
R1(config-ephone-dn)#exit
R1(config)#ephone 1
R1(config-ephone)#paging-dn 44