Manual

Note that the regular expression used to prevent local domains being searched via the DNS zone can be broken down
into the following components:
(.*) = match all pattern strings
(?!.*@example\.com.*$).* = do not match any pattern strings ending in @example.com
In the deployment example, calls destined for @cisco.com would be searched via the DNS zone, whereas calls
destined for @example.com would not.
Task 14: Configuring External (Unknown) IP Address Routing
The following configuration defines how a VCS routes calls (and other requests) to external IP addresses. An external
IP address is an IP address which is not ‘known’ to the VCS and therefore assumed to be a publicly routable address.
Known IP addresses are addresses defined in a subzone (using a subzone membership subnet rule) or the IP address
of an H.323 registered device.
■ All requests destined for external IP addresses, originating at the VCS Control are routed to the VCS
Expressway using a search rule.
■ The VCS Expressway then attempts to open a connection directly to the IP address.
To configure how the VCS handles calls to unknown IP addresses:
1. Go to Configuration > Dial plan > Configuration.
2. Configure the fields as follows:
 VCS Control VCS Expressway
Calls to unknown IP addresses Indirect Direct
VCS Control
VCS Expressway
3. Click Save.
To create the search rules to route calls to IP addresses to the VCS Expressway:
1. Go to Configuration > Dial plan > Search rules.
2. Click New.
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Cisco VCS Expressway and VCS Control - Basic Configuration Deployment Guide
Routing Configuration