Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - CMR Field Descriptions

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/callReportingBillingAdmin/15/cucm_b_reporting-billing-administration-guide-15/cucm_b_reporting-and-billing-administration-guide_chapter_01101.html

Published

2026-04-09

Updated

unknown

Accessed

2026-09-22

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• CUCM CMR concealment metrics are CCR (cumulative concealment over speech time), ICR (concealment rate over the last 3 seconds of active speech), ICRmx (maximum), CS (concealment seconds) and SCS (severely concealed seconds). in context
• CUCM CMR jitter and latency fields are expressed in milliseconds, unlike the raw RTCP jitter field, which uses timestamp units. in context
• CUCM documents K-factor scores as ranging from 1 (poor voice quality) to 5 (very good voice quality). in context
• CUCM CMRs do not show latency for every phone load; Cisco cites SIP phone loads 9.2.1 and 9.2.2 as not implementing it. in context
• In CUCM CMR varVQMetrics, MLQK (MOS Listening Quality K-factor) estimates the MOS of the last 8 seconds of speech on the receive path; MLQKav, MLQKmn and MLQKmx are the running average, minimum and maximum since call start. in context
• The CMR callIdentifier field (positive integer) identifies the call leg to which that CMR pertains. in context
• CCR is the cumulative ratio of concealment time over speech time since call start, ICR is the same ratio over the last 3 seconds of active speech, and ICRmx is the maximum concealment ratio seen during the call. in context
• CS (Conceal Secs) is the time during which some concealment is observed and SCS (Severely Conceal Secs) is the time during which a significant amount of concealment is observed. in context
• The CMR dateTimeStamp field is an integer giving the approximate time the device goes on hook. in context
• The Global Call ID is made of globalCallID_callManagerId and globalCallId_callId, and all CDR and CMR records associated with a standard call carry the same Global Call ID. in context
• Besides the join keys a CMR carries nodeId (the cluster node that generated it), directoryNumber and directoryNumberPartition, deviceName and pkid (a database unique identifier). in context
• The CMR jitter field estimates the statistical variance of RTP packet interarrival time in milliseconds as an unsigned integer, default 0. in context
• The CMR latency field is an estimate of network latency in milliseconds, but it is not populated for all phone loads; Cisco cites SIP 9.2.1 and 9.2.2 as loads that do not show latency. in context
• In the K-factor data MLQK is an estimate of the MOS score over the last 8 seconds of the received signal; MLQKmn and MLQKmx are the minimum and maximum since the call began and MLQKav is the running average since the call began. in context
• MLQKvr appears in the varVQMetrics examples (for example MLQKvr=0.95, or empty in a SIP example) but the K-Factor Data table gives it no definition. in context
• The K-factor MOS scores in the CMR use a scale from 1 (poor voice quality) to 5 (very good voice quality). in context
• numberPacketsLost in a CMR is the total number of RTP data packets lost since the beginning of reception, a count rather than a percentage. in context
• CUCM generates a CMR for each call leg when the user disconnects the call from the user device. in context
• In a CUCM CMR the cdrRecordType field is always 2; value 1 marks an end call detail record (CDR) and value 0 (start record) is not used. in context
• The CMR audio counters numberPacketsSent, numberOctetsSent, numberPacketsReceived and numberOctetsReceived count RTP data packets and RTP payload octets and default to 0. in context
• The Release 15 CMR also ends with localSessionID and remoteSessionID (up to 127 characters each) and headset fields SN (headset serial number) and Metrics (headset diagnostics up to 600 characters whose subfields are not validated). in context
• varVQMetrics is a text field holding a variable number of voice quality metrics as name=value pairs separated by semicolons, for example MLQK, MLQKav, MLQKmn, MLQKmx, MLQKvr, CCR, ICR, ICRmx, CS and SCS. in context
• CMRs carry video metrics for up to two video channels, including videoContentType (main, speaker or slides), duration, packet and octet counts, lost packets, jitter, round-trip time, one-way delay and Cisco transmission and reception metrics strings. in context

Cite this source record

APA

WarmTransfer. (2026, April 9). Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - CMR Field Descriptions. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-rb15-cmr-field-descriptions

BibTeX

@misc{warmtransfer-cisco-cucm-rb15-cmr-field-descriptions,
  title  = {Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - CMR Field Descriptions},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-rb15-cmr-field-descriptions},
  note   = {Cisco Systems, accessed 2026-09-22}
}