About Zones - Cisco TelePresence Administrator's Manual

Zones and neighbors

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:
control through links whether calls can be made between your local subzones and these other zones
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manage the bandwidth of calls between your local subzones and endpoints in other zones
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search for aliases that are not registered locally
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control the services available to endpoints within that zone by setting up its
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control the media encryption capabilities
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You can configure up to 1000 zones. Each zone is configured as one of the following zone types:
Neighbor: a connection to a neighbor system of the local VCS.
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Traversal client: the local VCS is a traversal client of the system being connected to, and there is a firewall
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between the two.
Traversal server: the local VCS is a traversal server for the system being connected to, and there is a
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firewall between the two.
ENUM: the zone contains endpoints discoverable by ENUM lookup.
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DNS: the zone contains endpoints discoverable by DNS lookup.
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The VCS also has a pre-configured
See the Zone configuration
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types.
See the Configuring search and zone transform rules
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targets for search rules.
Automatically generated neighbor zones
The VCS may automatically generate some non-configurable neighbor zones:
A VCS Control automatically generates neighbor zones between itself and each discovered Unified CM
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node when the system is configured for
A VCS automatically generates a neighbor zone named "To Microsoft Lync server via B2BUA" when the
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Lync B2BUA is enabled.
Cisco VCS Administrator Guide (X8.1.1)
for SIP calls to and from a zone
Default Zone.
section for information about the configuration options available for all zone
Unified Communications mobile and remote
authentication policy
section for information about including zones as
About zones
access.
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