Source note · Planning a Unified CM upgrade
Cisco's Collaboration Systems Release Compatibility Matrix identifies compatible software versions across collaboration products for CSR 10.5 and onward. It is the cross-product check for Unity Connection, CER, Expressway and similar applications.
Checked 2026-09-25
This matrix identifies the compatible product software release versions for Cisco Collaboration Systems Releases (CSR) 10.5 and onward.
- Vendor
- Cisco
- Product
- Cisco Collaboration Systems Release
- Subsystem
- compatibility
- Deployment
- on-premises
- Region
- not restricted
- Release range
- CSR 10.5 onward
- Checked
- 2026-09-25
Sources
- Cisco Collaboration Systems Release Compatibility Matrix — Cisco Systems · tier 2 current vendor documentation · Landing page introduction
Cite this note
APA
WarmTransfer. (2026, September 25). Planning a Unified CM upgrade: source note cucm-upgrade-planning-csr-matrix-purpose. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-csr-matrix-purpose
BibTeX
@misc{warmtransfer-claim-cucm-upgrade-planning-csr-matrix-purpose,
title = {Planning a Unified CM upgrade: source note cucm-upgrade-planning-csr-matrix-purpose},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-csr-matrix-purpose},
note = {Source note cucm-upgrade-planning-csr-matrix-purpose, checked 2026-09-25}
}