Source note · Cisco IP phone firmware management
PhoneOS 9800 Series and 8875 phones require Cisco Unified CM 12.5(1) or later.
Checked 2026-09-25
Cisco Unified Communications Manager 12.5(1) or later
- Vendor
- Cisco
- Product
- Cisco Desk Phone 9800 Series
- Subsystem
- compatibility
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Release Notes for Cisco PhoneOS Phones 9800 and 8875 — Cisco Systems (Webex Help Center) · tier 2 current vendor documentation · Release Notes for Cisco PhoneOS Phones 9800 and 8875 > Unified CM requirements
Cite this note
APA
WarmTransfer. (2026, September 25). Cisco IP phone firmware management: source note cucm-phone-firmware-phoneos-min-ucm. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-phoneos-min-ucm
BibTeX
@misc{warmtransfer-claim-cucm-phone-firmware-phoneos-min-ucm,
title = {Cisco IP phone firmware management: source note cucm-phone-firmware-phoneos-min-ucm},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-phone-firmware-phoneos-min-ucm},
note = {Source note cucm-phone-firmware-phoneos-min-ucm, checked 2026-09-25}
}