Source note · Cisco IP phone firmware management

According to a 2018 TAC note, installing a device pack for new device support on Unified CM 11.0(1) and earlier requires a cluster-wide reboot, whereas 11.5(1) and later require service restarts instead.

Checked 2026-09-25

Vendor: Cisco
Product: Cisco Unified Communications Manager
Subsystem: device packs
Deployment: on-premises
Region: not restricted
Release range: 11.0(1) and earlier vs 11.5(1) and later
Checked: 2026-09-25

Sources

Configure Device Pack on Cisco Call Manager — Cisco Systems (TAC) · tier 2 current vendor documentation · Configure Device Pack on Cisco Call Manager > post-installation service restarts

Cite this note

APA

WarmTransfer. (2026, September 25). Cisco IP phone firmware management: source note cucm-phone-firmware-devpack-reboot-pre-115. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-devpack-reboot-pre-115

BibTeX

@misc{warmtransfer-claim-cucm-phone-firmware-devpack-reboot-pre-115,
  title  = {Cisco IP phone firmware management: source note cucm-phone-firmware-devpack-reboot-pre-115},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-devpack-reboot-pre-115},
  note   = {Source note cucm-phone-firmware-devpack-reboot-pre-115, checked 2026-09-25}
}

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