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TANDBERG Gatekeeper User Guide
Page 50 of 105
11.5. URI Dialing from within the Enterprise
In this example, we want to set up our system so that users from within our enterprise can use URI
dialing to call a user in another enterprise.
To enable this:
1. Disable Allow DNS resolution on the TANDBERG Gatekeeper. You want to use the Border
Controller to resolve any H.323 URI received.
2. Enable Allow DNS Resolution on the TANDBERG Border Controller. You want to use the Border
Controller to resolve any H.323 URI received
3. Configure the same local domain name on both the Gatekeeper and the Border Controller.
4. Configure the Border Controller with the address of a public DNS server.
When an endpoint in our enterprise dials the full H.323 URI of an endpoint in another enterprise (for
example, Ben@EnterpriseB.com), the call will be routed to our Border Controller. This will discover
that Border Controller B is registered in DNS as responsible for enterprise B, and will route the call to it.
Border Controller B will receive the incoming call and route it accordingly.
URI dialing will send all queries for a particular domain to the same Border Controller. If you want to have
URI dialing covering multiple Border Controllers, nominate one as the master. That system is registered
in DNS and is set up with all the other Border Controllers and Gatekeepers as neighbors. When the
master receives a URI dialing request for an endpoint it does not know about, it will query its neighbors.