Configuring Zone Prefixes
A zone prefix is a string of numbers that is used to associate a gateway to a dialed number
in a zone. In Figure 8-34 and Example 8-13, the gatekeeper supports the 2... and 3...
zone prefixes. The four digits are used by the gatekeeper for resolving the addresses. The
San Jose and Houston sites use these digits for dialing between the sites. The gateways in
each zone register with either “2” or “3” at the gatekeeper. This allows the gatekeeper to
route the calls for a specific number range to the correct zone and gateway. Instead of
using 2... and 3... for the zone prefix configuration, you could use 2* and 3* for the prefixes.
The *symbol defines an endless number of digits. For example, a call to 24,
22224444, 2123, or 299999999999 would be routed to the designated gateway.
Example 8-13 Zone Prefix Configuration Example
GK1(config)#gatekeeper
GK1(config)#zone local SanJose cisco.com 10.1.1.10
GK1(config)#zone local Houston cisco.com
GK1(config)#zone prefix SanJose1 2... gw-priority 5 SanJose
GK1(config)#zone prefix SanJose2 2... gw-priority 10 Houston
GK1(config)#no shutdown
Figure 8-34 Configuring Zone Prefixes
You can complete the following steps to configure zone prefixes on a gatekeeper.
Step 1. Enter gatekeeper configuration mode.
GK1(config)#gatekeeper
Step 2. Add a prefix to the gatekeeper zone list.
GK1(config-gk)#zone prefix SanJose1 2... gw-priority 5 SanJose
GK1(config-gk)#zone prefix SanJose2 2... gw-priority 10 SanJose