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 |
1. ^{{cite web|title=Cisco Call Management Records K-Factor Data|url=http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/service/7_1_2/cdrdef/cdrkfact.html|publisher=Cisco Systems|accessdate=23 August 2013}}
{{telecomm-stub}}