Install, Upgrade and Maintenance Guide for Cisco Unity Connection Release 15 - Upgrading Cisco Unity Connection

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/15/install_upgrade/guide/b_15cuciumg/b_15cuciumg_chapter_010.html

Published

2025-12-02

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

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

Source notes citing this source

• In an L2 upgrade of a Unity Connection cluster, do not restart or switch version on the publisher until the subscriber upgrade is complete. After that, switch the publisher first and then the subscriber. in context
• While a Unity Connection cluster upgrades, the publisher is fully disabled and the subscriber keeps serving users and callers. in context
• After rolling Unity Connection back to the previous version, you cannot switch forward to the newer version again and must reinstall the upgrade. in context

Cite this source record

APA

WarmTransfer. (2025, December 2). Install, Upgrade and Maintenance Guide for Cisco Unity Connection Release 15 - Upgrading Cisco Unity Connection. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-cuc-15-upgrading-unity-connection

BibTeX

@misc{warmtransfer-cisco-cuc-15-upgrading-unity-connection,
  title  = {Install, Upgrade and Maintenance Guide for Cisco Unity Connection Release 15 - Upgrading Cisco Unity Connection},
  author = {{WarmTransfer}},
  year   = {2025},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-cuc-15-upgrading-unity-connection},
  note   = {Cisco Systems, accessed 2026-09-25}
}