Source note · Call quality metrics and MOS estimation
A collector that ingests both RTCP XR blocks and SIP vq-rtcpxr reports cannot assume one R-factor range, because RFC 3611 bounds R at 0 to 100 and RFC 6035 allows 0 to 120.
inferred · Checked 2026-09-24
- Vendor
- IETF
- Product
- RTCP XR
- Subsystem
- voice quality reporting
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3611 and RFC 6035
- Status
- inferred
- Checked
- 2026-09-24
Sources
- Session Initiation Protocol Event Package for Voice Quality Reporting — IETF / RFC Editor · tier 1 standards and regulators · Section 4.6.1 ABNF, compared with RFC 3611 section 4.7.5
Cite this note
APA
WarmTransfer. (2026, September 24). Call quality metrics and MOS estimation: source note call-quality-metrics-r-range-differs-by-spec. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-quality-metrics-r-range-differs-by-spec
BibTeX
@misc{warmtransfer-claim-call-quality-metrics-r-range-differs-by-spec,
title = {Call quality metrics and MOS estimation: source note call-quality-metrics-r-range-differs-by-spec},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/call-quality-metrics-r-range-differs-by-spec},
note = {Source note call-quality-metrics-r-range-differs-by-spec, checked 2026-09-24}
}