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.
Elmer Sinaza is a provider of TDM and VoIP phone calls. Using most recent technologies and extensive relations, Elmer Sinaza permits to cut the costs of phone calls considerably.