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

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}
}

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