Source note · Echo on VoIP calls
Cisco attributes hybrid echo to an impedance mismatch in the hybrid circuit such as a two-wire to four-wire interface.
Checked 2026-09-25
Hybrid echo is caused by an impedance mismatch in the hybrid circuit, such as a two-wire to four-wire interface.
- Vendor
- Cisco
- Product
- Cisco IOS voice gateways
- Subsystem
- echo-sources
- Deployment
- on-premises
- Region
- not restricted
- Release range
- as documented 2008-04-02
- Checked
- 2026-09-25
Sources
- Troubleshooting Echo Problems between IP Phones and IOS Gateways — Cisco · tier 2 current vendor documentation · Step-by-step Procedure to Troubleshoot and Eliminate Echo (echo types)
Cite this note
APA
WarmTransfer. (2026, September 25). Echo on VoIP calls: source note echo-on-calls-hybrid-echo-cause. WarmTransfer. https://warmtransfer.net/knowledge/claims/echo-on-calls-hybrid-echo-cause
BibTeX
@misc{warmtransfer-claim-echo-on-calls-hybrid-echo-cause,
title = {Echo on VoIP calls: source note echo-on-calls-hybrid-echo-cause},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/echo-on-calls-hybrid-echo-cause},
note = {Source note echo-on-calls-hybrid-echo-cause, checked 2026-09-25}
}