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Gatekeeper Transaction Message Protocol (GKTMP)

Definition - What does Gatekeeper Transaction Message Protocol (GKTMP) mean?

Gatekeeper Transaction Message Protocol (GKTMP) is a protocol that is used between the Cisco IOS Gatekeeper and a server to provide enhanced call routing and address translation services.

Techopedia explains Gatekeeper Transaction Message Protocol (GKTMP)

Cisco gatekeepers use different signaling methods to render redundancy, control capability and extensibility of an H.323 network. One key method is the Gatekeeper Transaction Message Protocol (GKTMP). Gatekeepers are H.323 devices that provide services (such as bandwidth management, admission control and address translation, etc.) to facilitate network scalability. These services are provided for H.323 terminals and multipoint control units. Such gatekeeper features are generally supported for the Cisco 2600, 3600, 2800, 3800 and 7200 family. Gatekeepers improve scalability and management and use the RAS protocol to communicate with Cisco voice gateway.

The GKTMP Interface Resiliency Enhancement feature incorporates additional parameters, such as call duration, start time and reason for field connection in Request DRQ messages, which are sent from gatekeeper to server. The server then uses these messages for billing and accounting functions. They allow the gatekeeper to identify unavailable servers and route them to alternate servers.

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