Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Initial Setup

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_01011.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

• CAR's default jitter ranges are Good 0 to 20, Acceptable 21 to 100, Fair 101 to 150 and Poor 151 to infinity. in context
• CAR's default lost-packet ranges are Good 0.00 to 15.00, Acceptable 15.01 to 30.00, Fair 30.01 to 45.00 and Poor 45.01 to infinity. in context
• When the clusterwide Call Diagnostics Enabled flag is disabled, the CAR dashboard shows that the flag is disabled and that QoS information will not be generated on calls. in context
• CAR ships no default latency ranges for its QoS grades, and not all three QoS parameters may be NA. in context
• CAR grades call voice quality as Good, Acceptable, Fair or Poor from administrator-configurable ranges for lost packets, jitter and latency, and a call matching no category is classified NA. in context
• The fetched Cisco sources give no absolute MOS pass or fail threshold for CMR voice quality: CAR grades on jitter, lost packets and latency, and the phone guidance recommends baselines and relative changes. inferred 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 - Initial Setup. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-rb15-car-initial-setup

BibTeX

@misc{warmtransfer-cisco-cucm-rb15-car-initial-setup,
  title  = {Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Initial Setup},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-rb15-car-initial-setup},
  note   = {Cisco Systems, accessed 2026-09-22}
}