If your organization restricts direct downloads, you can sync software via and deploy through your local repository.
Choose version 12.5(1) to view available Maintenance Releases and Service Updates (SUs).
The following guides provide the most current instructions for downloading and implementing version 12.5 updates: Software Download Page
Learn about the transition from 12.5 to the latest Release 15 in the Upgrade Planning Guide Find critical security patch details and bug fixes in the ReadMe for Release 12.5(1)SU9 Compatibility Matrix
Cisco Cucm 125 Download Updated =link= Jun 2026
If your organization restricts direct downloads, you can sync software via and deploy through your local repository.
Choose version 12.5(1) to view available Maintenance Releases and Service Updates (SUs).
The following guides provide the most current instructions for downloading and implementing version 12.5 updates: Software Download Page
Learn about the transition from 12.5 to the latest Release 15 in the Upgrade Planning Guide Find critical security patch details and bug fixes in the ReadMe for Release 12.5(1)SU9 Compatibility Matrix