What is Quality of Service? Why is it important?
Quality of Service is a method for applications (like VoIP) to mark certain connections or data traffic for preferential treatment in times of congestion. VoIP is susceptible to delay or jitter (interval at which information arrives). When the network is especially busy, Quality of Service prioritizes voice calls above many other types of data as they are passed across the network. This provides protection against echo and “breaking up” of calls.
