Source note · Call quality metrics and MOS estimation
RTCP XR end system delay is a 16-bit value in milliseconds covering encoding, jitter buffer, decoding and playout delay; round trip delay is a separate 16-bit millisecond field.
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 4.7.3, round trip delay and end system delay
Cite this note
APA
WarmTransfer. (2026, September 24). Call quality metrics and MOS estimation: source note call-quality-metrics-rtcpxr-end-system-delay. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-quality-metrics-rtcpxr-end-system-delay
BibTeX
@misc{warmtransfer-claim-call-quality-metrics-rtcpxr-end-system-delay,
title = {Call quality metrics and MOS estimation: source note call-quality-metrics-rtcpxr-end-system-delay},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/call-quality-metrics-rtcpxr-end-system-delay},
note = {Source note call-quality-metrics-rtcpxr-end-system-delay, checked 2026-09-24}
}