Source note · Call quality metrics and MOS estimation
RTCP XR encodes MOS-LQ and MOS-CQ as integers from 10 to 50 equal to MOS times 10, with 127 meaning unavailable.
Checked 2026-09-24
- Vendor
- IETF
- Product
- RTCP XR
- Subsystem
- VoIP Metrics Report Block
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3611
- Checked
- 2026-09-24
Sources
- RTP Control Protocol Extended Reports (RTCP XR) — IETF / RFC Editor · tier 1 standards and regulators · Section 4.7.5, MOS-LQ and MOS-CQ
Cite this note
APA
WarmTransfer. (2026, September 24). Call quality metrics and MOS estimation: source note call-quality-metrics-rtcpxr-mos-scaling. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-quality-metrics-rtcpxr-mos-scaling
BibTeX
@misc{warmtransfer-claim-call-quality-metrics-rtcpxr-mos-scaling,
title = {Call quality metrics and MOS estimation: source note call-quality-metrics-rtcpxr-mos-scaling},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/call-quality-metrics-rtcpxr-mos-scaling},
note = {Source note call-quality-metrics-rtcpxr-mos-scaling, checked 2026-09-24}
}