K-factor (Cisco)

For other uses, see K-factor.

In Cisco Voice over IP deployments, the K-Factor is a Cisco proprietary method of reporting endpoint mean opinion scores.[1] K-factor records contain the following metrics:

K-factor metrics
Field Display Description
CCR Cum Conceal Ratio Cumulative Conceal Ratio represents the cumulative ratio of concealment time over speech time that is observed after starting a call
ICR Interval Conceal Ratio Interval Conceal Ratio represents an interval-based average concealment rate that is the ratio of concealment time over speech time for the last 3 seconds of active speech
ICRmx Max Conceal Ratio Interval Conceal Ratio Max represents the maximum concealment ratio that is observed during the call
CS Conceal Secs Conceal Secs represents the time during which some concealment is observed during a call
SCS Severely Conceal Secs Severely Conceal Secs represents the time during which a significant amount of concealment is observed
MLQK MOS LQK MOS Listening Quality K-factor provides an estimate of the MOS score of the last 8 seconds of speech on the reception signal path
MLQKmn Min MOS LQK MOS Listening Quality K-factor Min represents the minimum score that is observed since the beginning of a call and represents the worst sounding 8-second interval
MLQKmx Max MOS LQK MOS Listening Quality K-factor Max represents the maximum score that is observed since the beginning of a call and represents the best sounding 8-second interval
MLQKav Avg MOS LQK MOS Listening Quality K-factor Avg represents the running average of scores that are observed since the beginning of a call

References


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