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IP Telephony Using CallManager Express Lab Portfolio by Ernie Friend, Cheryl A. Schmidt

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Chapter 10.VoIP Quality of Service and Security

Two buzzwords being used in the industry today are quality of service (QoS) and security. This chapter deals with the basics of these topics. Keep in mind that entire books are dedicated to both QoS and security, so the coverage in this chapter is relegated to what you need to know to complete the labs.

Typically, networks operate on a best-effort delivery basis. This means that all traffic has equal priority and an equal chance of being delivered in a timely manner. Similarly, when congestion occurs, all traffic has an equal chance of being dropped. You can implement QoS on each network device. It can provide an end-to-end solution to ensure that the important traffic gets through ...

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