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Zones
About Zones
A zone is a collection of endpoints, either all registered to a
single system (e.g. TANDBERG VCS, gatekeeper, or TANDBERG
Border Controller), or of a certain type such as ENUM or DNS.
The use of zones enables you to:
•
use links to determine whether calls can be made between
your local subzones and these other zones
•
manage the bandwidth of calls between your local subzones
and endpoints in other zones
•
easily search for aliases that are not registered locally
•
apply transforms to aliases before searching for them.
Your VCS allows you to configure up to 200 zones of 5 different
types. It also has a non-configurable Default Zone.
Neighbor Zone
A Neighbor zone could be a collection of endpoints registered
to another system (e.g. VCS, gatekeeper, or Border Controller),
or it could be a SIP device. The other system or SIP device is
referred to as a neighbor. Neighbors can be part of your own
enterprise network, part of a separate network, or even stand-
alone systems.
You create a neighbor relationship with the other system by
adding it as a neighbor zone on your local VCS. Once you have
added it, you can:
•
query the neighbor about its endpoints
•
apply transforms to any requests before they are sent to the
neighbor
•
control the bandwidth used for calls between your local VCS
and the neighbor zone.
Neighbor zone relationships are one-way; adding another
system to your VCS as a neighbor does not mean that
your VCS will also be a neighbor of that other system. In
such a situation, your VCS will know about and be able to query
the other system, but the other system will not know about or be
able to query your VCS. However, inbound calls will be identified
as coming from that neighbor if the source IP address matches.
Overview and
Introduction
Getting Started
Status
D14049.04
JULY 2008
Traversal Client Zone
In order to be able to traverse a firewall, the VCS must be
neighbored with a traversal server (for example a TANDBERG
VCS Expressway or a TANDBERG Border Controller).
In this situation your local VCS is a traversal client, so you
neighbor with the traversal server by creating a traversal client
zone on your local VCS. You then configure the client zone with
details of the corresponding zone on the traversal server. (The
traversal server must also be configured with details of the VCS
client zone.)
Once you have neighbored with the traversal server you can:
•
use the neighbor as a traversal server
•
query the traversal server about its endpoints
•
apply transforms to any queries before they are sent to the
traversal server
•
control the bandwidth used for calls between your local VCS
and the traversal server.
Traversal client-server zone relationships are two-way; in order for firewall traversal to work, the traversal server and the
traversal client must each be configured with the other's details. (See
Configuration
for more information.) The client and server will then be able to query each other.
System
VCS
Zones and
Configuration
Configuration
Neighbors
A VCS Expressway is able to act as a traversal server, providing
firewall traversal on behalf of traversal clients (for example, VCS
Controls or gatekeepers).
In order to act as a traversal server, the VCS Expressway must
have a special type of two-way neighbor relationship with each
traversal client. To do this, you create a traversal server zone
on your local VCS Expressway and configure it with the details of
the corresponding zone on the traversal client. (The client must
also be configured with details of the VCS Expressway.)
Once you have neighbored with the traversal client you can:
•
•
•
•
Call
Bandwidth
Processing
Control
87
TANDBERG
VIDEO COMMUNICATIONS SERVER
Traversal Server Zone
provide firewall traversal services to the traversal client
query the traversal client about its endpoints
apply transforms to any queries before they are sent to the
traversal client
control the bandwidth used for calls between your local VCS
and the traversal client.
Quick Guide to VCS Traversal Client - Server
Firewall
Applications
Maintenance
Traversal
ADMINISTRATOR GUIDE
Appendices
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