Specifications

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Cisco IOS Telephony Service, Version 2.02
Chapter 5 Command Reference
paging (ephone-dn)
Examples The following example configures IP multicast paging:
Router(config)# ephone-dn 20
Router(config-ephone-dn) number 2000
Router(config-ephone-dn) paging ip 192.0.1.1 port 2000
The configuration is as follows:
ephone-dn 20
number 2000
paging ip 224.0.1.20 port 2000
ephone-dn 21
number 2001
paging ip 224.0.1.21 port 2000
ephone 1
button 1:1
paging-dn 20
ephone 2
button 1:2
paging-dn 20
ephone 3
button 1:3
paging-dn 21
ephone 4
button 1:4
paging-dn 21
In this example paging calls to 2000 are multicast to Cisco IP phones (ephones) 1 and 2; paging calls to
2001 go to ephones 3 and 4.
Note The maximum number of unique IP address and router physical interfaces (or subinterfaces)
combinations supported for output of audio paging voice packets is ten. Paging using a single IP
multicast address that requires output on three different Ethernet interfaces represents use of three counts
out of the maximum ten. The limit of ten is likely to be exceeded only if unicast addressing is used for
the paging ephone-dn or if individual IP phones are configured for unicast paging support only.
Related Commands Command Description
ephone-dn Enters ephone-dn configuration mode and configures the directory
numbers for the Cisco IP phone lines.
paging-dn (ephone) Sets an audio paging directory number for each Cisco IP phone.
paging group (ephone-dn) Sets the audio paging directory number for a large combined group.