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| 7.5 |  | Voice Quality Issues |
| 7.5.2 |  | Implementing QoS for voice |

Voice, video, and mission-critical data applications are important underlying productivity tools that make a business successful. Ensuring that these applications are effectively delivered requires skillful traffic management particularly within the context of an integrated networking solution. Quality of Service (QoS) is a key Cisco AVVID network infrastructure enabling capability for such an environment.

In a converged environment, all types of traffic travel over a single transport infrastructure. Yet all traffic types are not the same. Data is bursty, loss intolerant, and not latency sensitive. Voice, on the other hand, is nonbursty and has some tolerance to loss but is latency sensitive. The challenge is in providing the required level of service for each of these traffic types.

Running both voice and data on a common network requires the proper quality of service (QoS) tools to ensure that the delay and loss parameters of voice traffic are satisfied. These tools are available as features in IP phones, switches, and routers.