From Release 15SU2 onward Unified CM supports TLS 1.3 for RTMT connections.

Checked 2026-09-25

Release 15SU2 onwards, Unified CM supports the TLS 1.3 protocol.
Vendor
Cisco
Product
Unified Communications Manager
Subsystem
RTMT security
Deployment
on-premises
Region
not restricted
Release range
15SU2 and later
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Unified CM RTMT alerts and monitoring: source note cucm-rtmt-alerts-tls13-15su2. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-rtmt-alerts-tls13-15su2

BibTeX

@misc{warmtransfer-claim-cucm-rtmt-alerts-tls13-15su2,
  title  = {Unified CM RTMT alerts and monitoring: source note cucm-rtmt-alerts-tls13-15su2},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-rtmt-alerts-tls13-15su2},
  note   = {Source note cucm-rtmt-alerts-tls13-15su2, checked 2026-09-25}
}

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