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.
Checked 2026-09-22
If a call does not satisfy any of the criteria that are set for any of the four voice-quality categories, it receives a classification of NA.
- Vendor
- Cisco
- Product
- Cisco Unified CM CAR
- Subsystem
- CAR QoS
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15 and SUs
- Checked
- 2026-09-22
Sources
- Call Reporting and Billing Administration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Initial Setup — Cisco Systems · tier 2 current vendor documentation · Initial Setup chapter, section Define QoS Values
Cite this note
APA
WarmTransfer. (2026, September 22). CUCM call management records (CMR) fields and the CDR relation: source note cucm-call-management-records-car-qos-grades. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-call-management-records-car-qos-grades
BibTeX
@misc{warmtransfer-claim-cucm-call-management-records-car-qos-grades,
title = {CUCM call management records (CMR) fields and the CDR relation: source note cucm-call-management-records-car-qos-grades},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-call-management-records-car-qos-grades},
note = {Source note cucm-call-management-records-car-qos-grades, checked 2026-09-22}
}