RAS channel See Topic 1 . The gatekeeper translates an alias address to a transport address. See Topic 2 . H.235 See Topic 3 .
Direct mode is the preferred method for more robust gatekeeper management.
See Topic 3 . Call accounting is a mandatory gatekeeper function. See Topic 3 . The gatekeeper can manage bandwidth by controlling the number of H.323 terminals allowed to use the network simultaneously. See Topic 3 .