A Conceal Ratio of zero means the IP network is delivering frames and packets on time with no loss, and the voice quality metrics reflect frame loss only, not noise, distortion or echo.
Checked 2026-09-22
Voice quality metrics do not account for noise or distortion, only frame loss.
- Vendor
- Cisco
- Product
- Cisco IP Phones on Unified CM
- Subsystem
- Voice quality monitoring
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-22
- Checked
- 2026-09-22
Sources
- Cisco IP Conference Phone 8832 Administration Guide for Cisco Unified Communications Manager - Maintenance — Cisco Systems · tier 2 current vendor documentation · Maintenance chapter, section Voice Quality Monitoring and Voice Quality Troubleshooting Tips table
Cite this note
APA
WarmTransfer. (2026, September 22). CUCM call management records (CMR) fields and the CDR relation: source note cucm-call-management-records-zero-conceal. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-call-management-records-zero-conceal
BibTeX
@misc{warmtransfer-claim-cucm-call-management-records-zero-conceal,
title = {CUCM call management records (CMR) fields and the CDR relation: source note cucm-call-management-records-zero-conceal},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-call-management-records-zero-conceal},
note = {Source note cucm-call-management-records-zero-conceal, checked 2026-09-22}
}