For Unified CM 12.0(1)SU2 and later, the install procedure also calls for restarting the Cisco CallManager service on the publisher, a step that can be skipped when that service runs only on subscribers.

Checked 2026-09-25

Vendor
Cisco
Product
Cisco Unified Communications Manager
Subsystem
device firmware management
Deployment
on-premises
Region
not restricted
Release range
12.0(1)SU2 and later, as documented in Release 15 guide
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Cisco IP phone firmware management: source note cucm-phone-firmware-restart-callmanager-pub. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-restart-callmanager-pub

BibTeX

@misc{warmtransfer-claim-cucm-phone-firmware-restart-callmanager-pub,
  title  = {Cisco IP phone firmware management: source note cucm-phone-firmware-restart-callmanager-pub},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-restart-callmanager-pub},
  note   = {Source note cucm-phone-firmware-restart-callmanager-pub, checked 2026-09-25}
}

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