The H.323 Gatekeeper

The H.323 Gatekeeper
The H.323 Gatekeeper is an optional component that provides call control services
for H.323 endpoints within your network.You can implement multiple
gatekeepers to run within your network, so long as they remain logically separate
from the endpoints.There are currently no standards for gatekeeper-to-gatekeeper
communications as of yet, so you may want to explore other options
before installing multiple gatekeepers within the same segment. Keep in mind,
this can cause some implementation issues, and, if implemented within your main
LAN/WAN, some network issues as well.To alleviate these problems, you could
install terminals, Multipoint Control Units, gateways, or other non-H.323 LAN
devices since these can coexist in the same environment. H.323 Gatekeepers provide
the following functions: