Source note · Troubleshooting audio delay and talk-over on voice calls
Cisco's technote states, citing G.131, that echo cancellers are required when one-way delay exceeds 25 ms, so added latency makes residual echo more noticeable.
Checked 2026-10-02
Echo cancellers are required when one-way delay exceeds 25 ms (G.131).
- Vendor
- Cisco
- Product
- not restricted
- Subsystem
- echo and delay
- Deployment
- on-premises
- Region
- not restricted
- Release range
- technote dated 2006-02-02
- Checked
- 2026-10-02
Sources
- Understanding Delay in Packet Voice Networks — Cisco Systems · tier 2 current vendor documentation · Standards for Delay Limits
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting audio delay and talk-over on voice calls: source note call-latency-troubleshooting-cisco-echo-canceller-over-25ms. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-latency-troubleshooting-cisco-echo-canceller-over-25ms
BibTeX
@misc{warmtransfer-claim-call-latency-troubleshooting-cisco-echo-canceller-over-25ms,
title = {Troubleshooting audio delay and talk-over on voice calls: source note call-latency-troubleshooting-cisco-echo-canceller-over-25ms},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/call-latency-troubleshooting-cisco-echo-canceller-over-25ms},
note = {Source note call-latency-troubleshooting-cisco-echo-canceller-over-25ms, checked 2026-10-02}
}