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.
Plenty of business companies use free Asterisk software and place it on their server, thus creating a cut-rate IP-PBX. They use manuals provided on setting up the extensions, and occasionally there are lots of discrepancies. Finding out how to install a dial plan or call flow, the set of regulations detailing how the switch deals with inbound and outbound calls is very difficult.
Brain21, Inc.
According to the various market evaluations, the IP telephony market is respected to beyond seven billion dollars annually including VoIP (Voice over IP) equipment, protocol stacks, and IP telephony services. As a major vendor of the market for IP telepho
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