Summary 231
This chapter discussed how to configure and manage static H.323 dial plans on gateway and
gatekeeper platforms for large VoIP networks. We described the relationships between
gateways, gatekeepers, and directory gatekeepers, and explained the responsibilities of
each of these network components in implementing a large-scale dial plan.
We talked about using translation rules to accomplish digit manipulation, and we talked
about using the preference command, HSRP, and other tools to configure failover options.
We also discussed how to use zone prefixes, technology prefixes, and hopoff zones to
simplify administration and scaling for call routing in large-scale dial plans.
ip subnet-zero
no ip domain-lookup
interface FastEthernet0/0
ip address
duplex auto
speed auto
interface FastEthernet0/1
no ip address
duplex auto
speed auto
no ip classless
no ip http server
zone local DGK
zone remote NA-GK 1719
zone remote AS-GK 1719
zone remote E-GK 1719
zone remote NA-AGK 1719
zone prefix NA-GK 1*
zone prefix E-GK 33*
zone prefix AS-GK 86*
lrq forward-queries
no shutdown
line con 0
transport input none
line aux 0
line vty 0 4
password xxx
Example 5-26 ALT-DGK (Secondary Directory Gatekeeper) Configuration (Continued)

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