Source note · Troubleshooting a Webex Calling Local Gateway
The Control Hub trunk error 'TLS Connection to Local Gateway failed due to DNS resolution failure' is resolved by making sure the configured SRV or FQDN resolves in DNS.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- certificate-based trunk TLS
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Configure trunks, route groups, and dial plans for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Troubleshooting section, error table SI No. 1
Cite this note
APA
WarmTransfer. (2026, September 25). Troubleshooting a Webex Calling Local Gateway: source note webex-local-gateway-troubleshooting-err-dns. WarmTransfer. https://warmtransfer.net/knowledge/claims/webex-local-gateway-troubleshooting-err-dns
BibTeX
@misc{warmtransfer-claim-webex-local-gateway-troubleshooting-err-dns,
title = {Troubleshooting a Webex Calling Local Gateway: source note webex-local-gateway-troubleshooting-err-dns},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/webex-local-gateway-troubleshooting-err-dns},
note = {Source note webex-local-gateway-troubleshooting-err-dns, checked 2026-09-25}
}