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.
NTEL (Naujasis Telefonas) is an international telephony service provider in Lithuania.NTEL offers you an opportunity to call abroad at special rates which are lower than using fixed telephony or mobile network.