Source note · Unified CM release trains and lifecycle dates
The 15SU4a ReadMe says the SU installs only on 12.5(1), 14, 15 through 15SU3/SU3a, or 15 ES builds 15.0.1.11001-3 to 15.0.1.14026-1. Earlier versions need a PCD migration.
Checked 2026-10-14
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- upgrade-path
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU4a
- Checked
- 2026-10-14
Sources
- ReadMe for Cisco Unified Communications Manager Release 15SU4a — Cisco Systems · tier 2 current vendor documentation · Important Notes / installation prerequisites, supported source versions
Cite this note
APA
WarmTransfer. (2026, October 14). Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-15su4a-upgrade-sources. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-15su4a-upgrade-sources
BibTeX
@misc{warmtransfer-claim-cucm-versions-lifecycle-15su4a-upgrade-sources,
title = {Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-15su4a-upgrade-sources},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-15su4a-upgrade-sources},
note = {Source note cucm-versions-lifecycle-15su4a-upgrade-sources, checked 2026-10-14}
}