Source note · Unified CM security hardening
If SRTP is allowed on a SIP trunk that uses a non-secure trunk security profile, SRTP still works but the keys are exposed in signaling and traces.
Checked 2026-09-25
If you use a non-secure profile, SRTP will still work but the keys will be exposed in signaling and traces.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- SIP trunk security profile
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-09-25
Sources
- Security Guide for Cisco Unified Communications Manager, Release 15 and SUs - Trunk and Gateway SIP Security — Cisco Systems · tier 2 current vendor documentation · Trunk and Gateway SIP Security > SRTP Allowed warning
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM security hardening: source note cucm-security-hardening-trunk-srtp-key-exposure. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-security-hardening-trunk-srtp-key-exposure
BibTeX
@misc{warmtransfer-claim-cucm-security-hardening-trunk-srtp-key-exposure,
title = {Unified CM security hardening: source note cucm-security-hardening-trunk-srtp-key-exposure},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-security-hardening-trunk-srtp-key-exposure},
note = {Source note cucm-security-hardening-trunk-srtp-key-exposure, checked 2026-09-25}
}