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.
iVox Communications is a privately funded company, formed in 2004 to build a national VoIP carrier grade network and provide wholesale services to internet and telephone service providers.