An H.323 entity that provides address translation, access control and bandwidth control.

A component of the ITU H.323 "umbrella" of standards defining real-time multimedia communications and conferencing for packet-based networks. The gatekeeper is the central control entity that performs management functions in a Voice and Fax over IP network and for multimedia applications such as video conferencing. Gatekeepers provide intelligence for the network, including address resolution, authorization, and authentication services, the logging of call detail records, and communications with network management systems. Gatekeepers also monitor the network for engineering purposes as well as for real-time network management and load balancing, control bandwidth, and provide interfaces to existing legacy systems.

Gatekeepers control that the gates are passed correctly.

This is a device located within the core of The Birmingham Grid for Learning. It controls the Quality of Service Zone, and prevents any part of the network that is QOS enabled from becoming “over subscribed

A gatekeeper is a utility that controls videoconference access on a packet-switched LAN. It requires that mul-timedia terminals register "at the gate", which is accomplished when the terminal provides its IP or IPX ad-dress. The gatekeeper translates network addresses and aliases to make connections. It can also deny ac-cess or limit the number of simultaneous connections to prevent congestion.

Gatekeepers can be hardware devices or software applications, and they act as management tools for the H.323 multimedia network standard. They monitor and control each zone of the network, translating addresses, controlling network access, and managing bandwidth. Their other tasks include overseeing authentication, call control and routing, detecting and preventing intrusions, and network load balancing.

The H.323 gatekeeper controls a particular set of videoconferencing resources (terminals, gateways, MCU's) and provides advanced services somewhat like a videoconferencing switchboard operator or traffic cop. In this role, the gatekeeper enables more scalable, reliable and secure H.323 conferencing.

an H.323 entity on the LAN which provides address translation and controls access to the LAN for H.323 terminals, gateways and MCUs

H.323 entity providing address translation, access control and other service functions to H.323 systems on a LAN. An H.323 component that allows the H.323 terminals on a network to interoperate. A gatekeeper maintains a registry of devices in the multimedia network. The devices register with the gatekeeper at start-up and request admission to a call from the gatekeeper.

someone who controls access to something; "there are too many gatekepers between the field officers and the chief"

a central control unit for routing call signal, the resolution of telephone numbers and the IP address and its conversion

a computer on the network that helps users find and connect with other people and computers, including gateways

a server that translates user names into physical addresses for H

a utility that controls H

Usually the individual who controls the flow of information from the mass media to the group or individual.

A gatekeeper maintains a registry of devices in the multimedia network. The devices register with the gatekeeper at startup, and request admission to a call from the gatekeeper. The gatekeeper is an H.323 entity that provides address translation and control access to the network for H.323 terminals and gateways. The gatekeeper may provide other services to the H.323 terminals and gateways, such as bandwidth management and locating gateways.

An H.323 entity on the LAN that provides address translation and control access the the LAN H.323 terminals and gateways.

The central control entity that performs management functions in a Voice and Fax over IP network and for multimedia applications such as video conferencing. Gatekeepers provide intelligence for the network, including address resolution, authorization, and authentication services, the logging of Call Detail Records, and communications with network management systems. Gatekeepers control bandwidth, provide interfaces to existing legacy systems, and monitor the network for engineering purposes as well as for real-time network management and load balancing.

A device that manages an IP network, supporting all gateways, user profiles, and authentication. A gatekeeper is defined by the H.323 standard.

A software security device for H.323 networks. It provides address translation and controls access to the LAN for H.323 codecs, Gateways and MCUs. See H.323, IP, LAN, Gateway, MCU, Codec

Software that performs two important functions to maintain the robustness of the network: address translation and bandwidth management. Gatekeepers map LAN aliases to IP addresses and provide address lookups when needed.

An H.323 entity on a network that provides address translation and controls access to the local area network for H.323 terminals, Gateways and MCUs.

The employee in a business who controls the information in a company's buying center or purchasing department.

In the H.323 world, the gatekeeper provides several important functions. First, it controls access to the network, allowing or denying calls and controlling the bandwidth of a call. Second, it helps with address resolution, making possible email type names for end users, and converting those into the appropriate network addresses.

The gatekeeper is the brain of an H.323 network, performing essential control, administrative, and managerial functions. However, the gatekeeper does not route any data packets in a network. These continue to rely on standard network routing equipment. The primary purposes of a gatekeeper are address translation and zone administration using layer three of the OSI model.

A device or computer that controls one or more gateways within a "zone". Gatekeepers are responsible for routing all calls to/from the gateways in a non-point-to-point situation. Gatekeepers can communicate with other gatekeepers, but usually only between those of the same manufacturer.

A person who has the power to control and direct the flow of information as well as the ability to limit, expand, emphasize or interpret that information.

Gatekeepers perform two important functions which help maintain the robustness of the network: address translation and bandwidth management. Gatekeepers map LAN aliases to IP addresses and provide address lookups when needed. Gatekeepers also exercise call control functions to limit the number of H.323 connections, and the total bandwidth used by these connections, in an H.323 zone. A gatekeeper is not required in an H.323 system. However, if a Gatekeeper is present, terminals must make use of its services.