Source note · Echo on VoIP calls
When the IP phone user hears echo, Cisco attributes it to hybrids in the PSTN network.
Checked 2026-09-25
The problem exists when IP phone users hear echo caused by hybrids in a PSTN network.
- Vendor
- Cisco
- Product
- Cisco IP phones with IOS 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 · IP Phone User Hears Echo section
Cite this note
APA
WarmTransfer. (2026, September 25). Echo on VoIP calls: source note echo-on-calls-ip-user-hears-pstn-hybrid. WarmTransfer. https://warmtransfer.net/knowledge/claims/echo-on-calls-ip-user-hears-pstn-hybrid
BibTeX
@misc{warmtransfer-claim-echo-on-calls-ip-user-hears-pstn-hybrid,
title = {Echo on VoIP calls: source note echo-on-calls-ip-user-hears-pstn-hybrid},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/echo-on-calls-ip-user-hears-pstn-hybrid},
note = {Source note echo-on-calls-ip-user-hears-pstn-hybrid, checked 2026-09-25}
}