Source note · Echo on VoIP calls
The Cisco echo-cancel loopback command puts the echo canceller in loopback for diagnostics; if cancellation fails in loopback, the interface is the source of the problem.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco IOS
- Subsystem
- isolation
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Cisco IOS Voice Command Reference - D through I - E — Cisco · tier 2 current vendor documentation · echo-cancel loopback > Usage Guidelines
Cite this note
APA
WarmTransfer. (2026, September 25). Echo on VoIP calls: source note echo-on-calls-ios-ec-loopback-diagnostic. WarmTransfer. https://warmtransfer.net/knowledge/claims/echo-on-calls-ios-ec-loopback-diagnostic
BibTeX
@misc{warmtransfer-claim-echo-on-calls-ios-ec-loopback-diagnostic,
title = {Echo on VoIP calls: source note echo-on-calls-ios-ec-loopback-diagnostic},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/echo-on-calls-ios-ec-loopback-diagnostic},
note = {Source note echo-on-calls-ios-ec-loopback-diagnostic, checked 2026-09-25}
}