Source note · DNS SRV and service discovery for SIP
For a certificate-based Webex Calling trunk, the Local Gateway must be reachable from the internet on a public IPv4 address that resolves from a DNS A or SRV record in a domain verified in Control Hub.
Checked 2026-09-24
This address MUST be resolved from a DNS A or SRV record from a domain that has been verified in the Control Hub.
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- trunk addressing
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Configure trunks, route groups, and dial plans for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Certificate-based trunk requirements
Cite this note
APA
WarmTransfer. (2026, September 24). DNS SRV and service discovery for SIP: source note dns-srv-voice-wxc-trunk-public-a-or-srv. WarmTransfer. https://warmtransfer.net/knowledge/claims/dns-srv-voice-wxc-trunk-public-a-or-srv
BibTeX
@misc{warmtransfer-claim-dns-srv-voice-wxc-trunk-public-a-or-srv,
title = {DNS SRV and service discovery for SIP: source note dns-srv-voice-wxc-trunk-public-a-or-srv},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dns-srv-voice-wxc-trunk-public-a-or-srv},
note = {Source note dns-srv-voice-wxc-trunk-public-a-or-srv, checked 2026-09-24}
}