You're looking for information on downloading Cisco Unified Communications Manager (CUCM) 12.5.
To download Cisco CUCM 12.5, you'll need to have a valid Cisco account and access to the Cisco website. Here's a step-by-step guide: Cisco Cucm 12.5 Download
CUCM 12.5 offers several specialized reporting tools depending on the data you need: You're looking for information on downloading Cisco Unified