Source note · Planning a Unified CM upgrade
From Release 15SU2, Call Home is deprecated as a Smart Licensing transport. Smart Transport, introduced in 14SU4 and 15SU2, is the preferred mode.
Checked 2026-09-25
From Release 15SU2 onwards, Call Home as a transport mode for smart licensing is deprecated
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- Smart Licensing
- Deployment
- on-premises
- Region
- not restricted
- Release range
- 15SU2 and later (Smart Transport also 14SU4)
- Checked
- 2026-09-25
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing — Cisco Systems · tier 2 current vendor documentation · Smart Software Licensing > Transport modes
Cite this note
APA
WarmTransfer. (2026, September 25). Planning a Unified CM upgrade: source note cucm-upgrade-planning-call-home-deprecated. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-call-home-deprecated
BibTeX
@misc{warmtransfer-claim-cucm-upgrade-planning-call-home-deprecated,
title = {Planning a Unified CM upgrade: source note cucm-upgrade-planning-call-home-deprecated},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-upgrade-planning-call-home-deprecated},
note = {Source note cucm-upgrade-planning-call-home-deprecated, checked 2026-09-25}
}