Gatekeeper
Gatekeeper is an administrational tool for H.232 multimedia networks. A single unit can control interactions for each zone, which comprises the terminals, MCU's and gateway within the frames of a particular domain. Gatekeeper is an optional element, but when it available, it becomes the central administrative entity.
With the help of this function you can do so that when you call the number which you will indicate from the list registered on your account will display at the called subscriber.
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