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Cisco Systems. Cisco Voice over IP. Volume 3. Student Guide

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Cisco Systems. Cisco Voice over IP. Volume 3. Student Guide
Cisco Systems, 2008. — 180 p.
This lesson reviews the functions and roles of gatekeepers and directory gatekeepers and the protocol used between gateways and gatekeepers. This lesson discusses in depth the Registration, Admission, and Status (RAS) signaling sequencing between gateways and gatekeepers, and discusses the use of the Gatekeeper Transaction Message Protocol (GKTMP).
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