A certificate-based Webex Calling Local Gateway trunk authenticates by certificate with LGW FQDN verification, and every SIP transaction the gateway starts toward Webex Calling must carry the gateway FQDN in the Contact header.
Checked 2026-10-02
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- Local Gateway trunk
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Get started with Local Gateway — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Trunk types comparison: certificate-based trunk
Cite this note
APA
WarmTransfer. (2026, October 2). SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-webex-lgw-cert-fqdn-contact. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-webex-lgw-cert-fqdn-contact
BibTeX
@misc{warmtransfer-claim-sip-trunk-authentication-models-webex-lgw-cert-fqdn-contact,
title = {SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-webex-lgw-cert-fqdn-contact},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-webex-lgw-cert-fqdn-contact},
note = {Source note sip-trunk-authentication-models-webex-lgw-cert-fqdn-contact, checked 2026-10-02}
}