Chapter 7. Introducing Quality of Service

After reading this chapter, you should be able to perform the following tasks:

• Explain the functions, goals, and implementation models of QoS, and what specific issues and requirements exist in a converged Cisco Unified Communications network.

• Describe the characteristics and QoS mechanisms of the DiffServ model and contrast it to other models.

Converged networks must be engineered properly to guarantee satisfactory VoIP service. This chapter describes quality of service (QoS) requirements and conceptual models such as best effort, Integrated Services (IntServ), and Differentiated Services (DiffServ).

Fundamentals of QoS

IP networks must provide a number of services to adequately support voice transmission ...

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