For a secure Unified CM SIP trunk to Unity Connection, the X.509 Subject Name in the SIP Trunk Security Profile must match the Unity Connection server FQDN.
Checked 2026-10-02
X.509 Subject Name must match the FQDN of Unity Connection server.
- Vendor
- Cisco
- Product
- Unity Connection
- Subsystem
- Unified CM SIP integration
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unity Connection 15
- Checked
- 2026-10-02
Sources
- Cisco Unified Communications Manager SIP Integration Guide for Cisco Unity Connection Release 15 - Setting Up a Cisco Unified Communications Manager SIP Trunk Integration — Cisco Systems · tier 2 current vendor documentation · Setting Up a Cisco Unified CM SIP Trunk Integration > SIP trunk security profile
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Unified CM SIP trunks that show No Service: source note cucm-sip-trunk-no-service-troubleshooting-cuc-x509-fqdn. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-sip-trunk-no-service-troubleshooting-cuc-x509-fqdn
BibTeX
@misc{warmtransfer-claim-cucm-sip-trunk-no-service-troubleshooting-cuc-x509-fqdn,
title = {Troubleshooting Unified CM SIP trunks that show No Service: source note cucm-sip-trunk-no-service-troubleshooting-cuc-x509-fqdn},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-sip-trunk-no-service-troubleshooting-cuc-x509-fqdn},
note = {Source note cucm-sip-trunk-no-service-troubleshooting-cuc-x509-fqdn, checked 2026-10-02}
}