Source note · DNS SRV and service discovery for SIP
When a Webex Calling certificate-based trunk uses an SRV address, the SRV service type must have the _sips._tcp prefix.
Checked 2026-09-24
the service type MUST have a prefix of '_sips._tcp'
- 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, SRV address
Cite this note
APA
WarmTransfer. (2026, September 24). DNS SRV and service discovery for SIP: source note dns-srv-voice-wxc-trunk-sips-prefix. WarmTransfer. https://warmtransfer.net/knowledge/claims/dns-srv-voice-wxc-trunk-sips-prefix
BibTeX
@misc{warmtransfer-claim-dns-srv-voice-wxc-trunk-sips-prefix,
title = {DNS SRV and service discovery for SIP: source note dns-srv-voice-wxc-trunk-sips-prefix},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/dns-srv-voice-wxc-trunk-sips-prefix},
note = {Source note dns-srv-voice-wxc-trunk-sips-prefix, checked 2026-09-24}
}