Source note · Planning a Unified CM upgrade
Phone models on Cisco's deprecated list stop working after an upgrade to the current Unified CM release, so they must be replaced beforehand.
Checked 2026-09-25
If you are upgrading to the current release of Cisco Unified Communications Manager and you have any of these phone models deployed, the phone will not work after the upgrade.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- endpoints
- Deployment
- on-premises
- Region
- not restricted
- Release range
- destination Release 15 and SUs
- Checked
- 2026-09-25
Sources
- Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 15 and SUs - Planning the Upgrade — Cisco Systems · tier 2 current vendor documentation · Planning the Upgrade > Deprecated Phone Models
Cite this note
APA
WarmTransfer. (2026, September 25). Planning a Unified CM upgrade: source note cucm-upgrade-planning-deprecated-phones-stop. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-deprecated-phones-stop
BibTeX
@misc{warmtransfer-claim-cucm-upgrade-planning-deprecated-phones-stop,
title = {Planning a Unified CM upgrade: source note cucm-upgrade-planning-deprecated-phones-stop},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-deprecated-phones-stop},
note = {Source note cucm-upgrade-planning-deprecated-phones-stop, checked 2026-09-25}
}