IP telephony (IPT) technology has gained wide acceptance in the industry because it offers new ways to communicate and enables rich media communication capabilities. Recent studies have shown that deployment of IPT also helps improve employee productivity as a result of faster moves, adds, and changes; increased user mobility; and reduction in the time to set up telecommunication infrastructure for new office spaces. These are a few of the many benefits that are motivating organizations to move to IP-based PBX deployments.Successful deployment of any new technology solution requires thorough understanding of the function of various components involved and the interaction among them. The architects and engineers who are tasked with implementing the IPT solution must ensure that the proposed architecture meets all the requirements and is also scalable in the future. To assist the architects and engineers in accomplishing this task, this book divides the deployment of IPT into planning, design, implementation, operation, and optimization (PDIOO) phases.This book addresses the most important information that customers, network engineers, and architects should collect in each phase of the PDIOO methodology in deploying Cisco IPT solutions.
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