Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 12.5(1) - Upgrade Planning

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/upgrade/12_5_1/cucm_b_upgrade-migration-guide-125x/cucm_b_upgrade-guide-1251su2_chapter_00.html

Published

2025-07-25

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• A direct refresh upgrade upgrades both the application software and the underlying operating system. in context
• For a 12.5(x) destination, sources on 10.5(x), 11.x and 12.0(x) take a direct refresh upgrade, while 12.5(x) to 12.5(y) is a standard upgrade. in context
• Cisco Smart Software Licensing replaces Prime License Manager in Unified CM Release 12.0(1) and later. in context
• A direct standard upgrade upgrades the application software but not the underlying operating system. in context

Cite this source record

APA

WarmTransfer. (2025, July 25). Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 12.5(1) - Upgrade Planning. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cucm-upgrade-1251-planning

BibTeX

@misc{warmtransfer-cisco-cucm-upgrade-1251-planning,
  title  = {Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 12.5(1) - Upgrade Planning},
  author = {{WarmTransfer}},
  year   = {2025},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cucm-upgrade-1251-planning},
  note   = {Cisco Systems, accessed 2026-09-24}
}