Source note · Unified CM release trains and lifecycle dates

CSCwi52160 is an open caveat on all Release 15 versions: direct migration from pre-15 to 15 fails when the system has upgrade history from before 10.0.

Checked 2026-10-14

Vendor: Cisco
Product: Cisco Unified Communications Manager
Subsystem: upgrade-path
Deployment: on-premises
Region: not restricted
Release range: Release 15 (all), as of 15SU4a ReadMe
Checked: 2026-10-14

Sources

ReadMe for Cisco Unified Communications Manager Release 15SU4a — Cisco Systems · tier 2 current vendor documentation · Open Caveats, CSCwi52160

Cite this note

APA

WarmTransfer. (2026, October 14). Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-cscwi52160-open-caveat. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-cscwi52160-open-caveat

BibTeX

@misc{warmtransfer-claim-cucm-versions-lifecycle-cscwi52160-open-caveat,
  title  = {Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-cscwi52160-open-caveat},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-cscwi52160-open-caveat},
  note   = {Source note cucm-versions-lifecycle-cscwi52160-open-caveat, checked 2026-10-14}
}

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