Cisco Cisco Expressway Maintenance Manual
About zones
A zone is a collection of endpoints, either all registered to a single system or located in a certain way such as
via an ENUM or DNS lookup. Zones are used to:
via an ENUM or DNS lookup. Zones are used to:
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control through links whether calls can be made between these zones
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manage the bandwidth of calls
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search for aliases
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You can configure up to 1000 zones. Each zone is configured as one of the following zone types:
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: a connection to a neighbor system of the local Expressway.
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: the local Expressway is a traversal client of the system being connected to, and there is a
firewall between the two.
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: the local Expressway is a traversal server for the system being connected to, and there is
a firewall between the two.
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: the zone contains endpoints discoverable by ENUM lookup.
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: the zone contains endpoints discoverable by DNS lookup.
.
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types.
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section for information about including zones as
targets for search rules.
Automatically generated neighbor zones
The Expressway may automatically generate some non-configurable neighbor zones:
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An Expressway-C automatically generates neighbor zones between itself and each discovered Unified CM
node when the system is configured for
node when the system is configured for
.
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An Expressway automatically generates a neighbor zone named "To Microsoft Lync server via B2BUA"
when the
when the
is enabled.
Cisco Expressway Administrator Guide (X8.1)
Page 76 of 344
Zones and neighbors
About zones