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 ...