Source note · Cisco unified cm
Direct upgrade to 15SU4a is supported from Unified CM 12.5(1), 14, and 15 through 15SU3/SU3a, including 15 ES builds from 15.0.1.11001-3 to 15.0.1.14026-1; older releases need a PCD migration.
Checked 2026-09-30
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- upgrade
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU4a
- Checked
- 2026-09-30
Sources
- ReadMe for Cisco Unified Communications Manager Release 15SU4a — Cisco Systems · tier 2 current vendor documentation · Supported upgrade paths section
Cite this note
APA
WarmTransfer. (2026, September 30). Cisco unified cm: source note cisco-unified-cm-15su4a-upgrade-sources. WarmTransfer. https://warmtransfer.net/knowledge/claims/cisco-unified-cm-15su4a-upgrade-sources
BibTeX
@misc{warmtransfer-claim-cisco-unified-cm-15su4a-upgrade-sources,
title = {Cisco unified cm: source note cisco-unified-cm-15su4a-upgrade-sources},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cisco-unified-cm-15su4a-upgrade-sources},
note = {Source note cisco-unified-cm-15su4a-upgrade-sources, checked 2026-09-30}
}