Source note · Troubleshooting a Webex Calling Local Gateway
When the trunk error says the gateway certificate is signed by an invalid Certificate Authority, or that Webex is unable to trust the CA, the fix is a certificate signed by a CA on Cisco's supported list.
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. 3 and 9
Cite this note
APA
WarmTransfer. (2026, September 25). Troubleshooting a Webex Calling Local Gateway: source note webex-local-gateway-troubleshooting-err-invalid-ca. WarmTransfer. https://warmtransfer.net/knowledge/claims/webex-local-gateway-troubleshooting-err-invalid-ca
BibTeX
@misc{warmtransfer-claim-webex-local-gateway-troubleshooting-err-invalid-ca,
title = {Troubleshooting a Webex Calling Local Gateway: source note webex-local-gateway-troubleshooting-err-invalid-ca},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/webex-local-gateway-troubleshooting-err-invalid-ca},
note = {Source note webex-local-gateway-troubleshooting-err-invalid-ca, checked 2026-09-25}
}