What is Digital Voice Quality of Service (QoS)?
Quality of Service or QoS is the quality of a call over a network. It also refers to the ability to prioritize certain types of traffic on an IP network. In the case of Digital Voice, this typically means prioritizing voice traffic at a higher level than other forms of traffic such as data so that voice traffic will not be delayed or dropped. Most QoS solutions focus on either resource reservation or resource prioritization. What is Digital Voice latency? Digital Voice latency causes delays in packet delivery. Physical distance, the number of router hops, encryption, and voice/data conversion all have an impact on latency. Users begin noticing latency as a service level issue when roundtrip latency is greater than 250 milliseconds (ms). The International Telecommunications Union recommends that latency never exceed 150 ms one way (from speaker to listener).
