QoE and VoIP Quality are two metrics that really work hand-in-hand. In fact, users base their opinions about the network exclusively on their perception of QoE. QoE allows you to measure the user’s perception of the effectiveness and quality of a system or service to essentially give you a performance standard.
It results from the fulfillment of his or her expectations with respect to the utility and / or enjoyment of the application or service in the light of the user’s personality and current state.” “The degree of delight or annoyance of the user of an application or service. QUALINET (The European Network on Quality of Experience in Multimedia Systems and Services), describes QoE as: Quality of Experience (QoE) is a metric that allows you to measure performance from the end-user perspective to gain a better understanding of human quality metrics and be able to actually measure whether performance met a user’s expectations. Users identify good performance because essentially, good performance is the ability to meet a user’s expectations. When it comes to measuring the performance of any technologies or application, the user-perspective is your most important metric. The maximum MOS Score for a G.711 call is 4.4. The MOS Score we measure is for the G.711 codec, which is by far the mostly used codec for VoIP calls.
Some codecs such as G.711 are uncompressed for higher quality but use more bandwidth than compressed codecs such as the G.729. The standard defines how to calculate MOS Score for VoIP Quality based on multiple factors such as the specific codec used for the VoIP call.
The MOS Score (Mean Opinion Score) for Voice Quality was originally developed for traditional voice calls but has been adapted to Voice over IP (VoIP) in the ITU-T PESQ P.862. Although originally Mean Opinion Scores were derived from surveys of expert observers, today a MOS Score is often produced by an Objective Measurement Method approximating a human ranking. Voice Quality MOS Score is most often judged on a scale from 1 (bad) to 5 (excellent) of the perceived quality of a voice call. Standardized by the International Telecommunications Union (ITU-T), MOS Score refers to:Ī numerical measure of the human-judged overall quality of voice and video sessions. The Mean Opinion Score, usually referred to as MOS Score, has been the most commonly-used metric to measure the overall voice call quality for decades.
0 kommentar(er)
