Chapter 3 - Before You Deploy
Gatekeeper Identifier
You will need to specify the gatekeeper identifier for each gatekeeper being deployed. You must also define the maximum number of endpoints that may be registered to each gatekeeper and the maximum number of calls that each gatekeeper may handle at one time.
Default Gatekeeper
An endpoint may register to a gatekeeper automatically or manually. If endpoint registration is automatic, the registration policy must specify a default gatekeeper — more than one gatekeeper may exist on the network.
The registration policy defines the endpoints that may register to the gatekeeper. It may allow any endpoint to register, or it may restrict registration to specific endpoints or endpoints on specific networks.
Call Routing Mode
The default call mode may be direct or routed. In direct call mode, the gatekeeper allows endpoints to send messages directly to each other — the calls do not need to be routed through the gatekeeper. If direct call mode is used, gatekeeper functionality (such as simplified dialing, Conference on Demand, and alternate routing) is not available, because the call bypasses the gatekeeper.
Developing the Dial Plan
The final element of the predeployment preparations is the dial plan.
The dial plan defines how you set numeric aliases and service prefixes. Numeric aliases look like telephone numbers. They allow people to dial a short string of numbers like a telephone extension or local telephone number instead of entering a full IP address.
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