Chapter 13. Introduction to Deploying Cisco IP Telephony

This chapter covers the following topics:

  • Identifying the Network and Device Design Considerations Used to Support Voice Traffic

  • Implementing Voice VLANs for Carrying Voice Traffic

  • Explaining the Recommendations for Implementing IP Telephony in the Multilayer Switched Network

IP telephony (Voice over IP [VoIP]) places strict design requirements on the network infrastructure. For example, for IP telephony to maintain its required five nines (99.999%) uptime, the multilayer switched network must provide sufficient bandwidth and quick convergence after network failures or changes. Providing sufficient bandwidth to IP telephony requires a well-planned network design with the use of quality of service ...

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