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External Gatekeeper
On the External Gatekeeper page, you can add or remove neighbor gatekeepers. This is a
supercluster-wide configuration.
When an enterprise has multiple neighbored gatekeepers, each gatekeeper manages its own H.323 zone.
When a call originates in one gatekeeper zone and that zone’s gatekeeper is unable to resolve the dialed
address, it forwards the call to the appropriate neighbor gatekeeper(s) for resolution.
But note that a Polycom RealPresence DMA supercluster can manage multiple locations as a single H.323
zone, with the clusters acting as a single virtual gatekeeper. This allows the gatekeeper function to be
geographically distributed, but managed centrally. A Polycom RealPresence DMA supercluster may
eliminate the need for multiple zones and neighbor gatekeepers.
The following table describes the fields in the list.
Avg Jitter (msec) Average jitter rate of this site’s active calls.
Avg Delay (msec) Average delay rate of this site’s active calls.
Territory Territory to which the site belongs.
Cluster Cluster responsible for the territory to which the site belongs.
Note: External gatekeeper considerations
When adding a neighbor gatekeeper, you can only specify one IP address. In an IPv4 + IPv6
environment, to add a neighbor gatekeeper that has both an IPv4 and an IPv6 address, do the
following:
• Add the neighbor gatekeeper using its IPv4 address.
• Add it a second time using its IPv6 address.
• Add one Resolve to external gatekeeper dial rule (see Add Dial Rule Dialog) that specifies the
neighbor gatekeeper’s IPv4 address entry (and no other gatekeepers).
• Add another Resolve to external gatekeeper dial rule that specifies the neighbor gatekeeper’s
IPv6 address entry (and no other gatekeepers).
Requests from endpoints with IPv4 addresses will be forwarded to the gatekeeper’s IPv4 address,
and requests from endpoints with IPv6 addresses will be forwarded to the gatekeeper’s IPv6 address.
Column Description
Name The name of the neighbored gatekeeper.
Description Brief description of the gatekeeper.
Address Host name or IP address of the gatekeeper.
Column Description