Source note · Unified CM intercluster trunks

If SRTP Allowed is checked on a trunk with a non-encrypted security profile, SRTP keys are exposed in signaling and traces; Cisco recommends an encrypted TLS profile.

Checked 2026-09-25

the keys will be exposed in signaling and traces

Vendor: Cisco
Product: Unified Communications Manager
Subsystem: SIP trunk security
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 caution

Cite this note

APA

WarmTransfer. (2026, September 25). Unified CM intercluster trunks: source note cucm-intercluster-trunks-sec-srtp-keys-exposed. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-intercluster-trunks-sec-srtp-keys-exposed

BibTeX

@misc{warmtransfer-claim-cucm-intercluster-trunks-sec-srtp-keys-exposed,
  title  = {Unified CM intercluster trunks: source note cucm-intercluster-trunks-sec-srtp-keys-exposed},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-intercluster-trunks-sec-srtp-keys-exposed},
  note   = {Source note cucm-intercluster-trunks-sec-srtp-keys-exposed, checked 2026-09-25}
}

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