User`s guide

System Administrator’s Guide – Release 7.2.3.x
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Revised: September 1, 2010
Page 89
Paging Base IP Address – This is the multicast base IP address used by the system. Each paging zone uses
the base address plus an offset. Zone 0 (the overhead zone), uses an offset of 0, zone 1 uses an offset of 1,
etc. For example, if the base address was set to 239.255.10.0, then zone 2 would use multicast IP address
239.255.10.2.
Paging Port
– This is the UDP port number that the packets are sent to. All zones use the same port number,
but each has its own multicast IP address.
Paging Max Hop Count
– This value controls the time-to-live (TTL) count in the IP header of all paging
UDP/RTP frames. Typically this value is set to 1 so that the packet will not be sent beyond the local subnet.
However, if you have multiple subnets with phones on them, this value will need to be increased.