Source note · Unified CM release trains and lifecycle dates
From 15SU3 onward, Unified CM virtual machines need a CPU with AVX support. VMware EVC baselines older than AVX, such as Westmere, cause installs, direct upgrades and direct migrations to fail.
Checked 2026-10-14
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- virtualization
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU3 and later
- Checked
- 2026-10-14
Sources
- ReadMe for Cisco Unified Communications Manager Release 15SU4a — Cisco Systems · tier 2 current vendor documentation · Important Notes, CPU / AVX requirement
Cite this note
APA
WarmTransfer. (2026, October 14). Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-15su3-avx-cpu-required. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-15su3-avx-cpu-required
BibTeX
@misc{warmtransfer-claim-cucm-versions-lifecycle-15su3-avx-cpu-required,
title = {Unified CM release trains and lifecycle dates: source note cucm-versions-lifecycle-15su3-avx-cpu-required},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-versions-lifecycle-15su3-avx-cpu-required},
note = {Source note cucm-versions-lifecycle-15su3-avx-cpu-required, checked 2026-10-14}
}