Today, I’ve been working on a design document for a customer in Minneapolis. For this project, we’re rolling out the full Cisco UC 8.6 “iron fist”: CUCM, CUC, CUPS, CER, and CUEAC.
I wanted to define the phone firmware versions for CUCM 8.6(2a), but forgot where to find it.
After 10 minutes of searching, I uncovered the firmware matrix here: Cisco Unified Communications Manager Software Compatibility Matrix.
Search for “Default Loads” (the page itself is length). Voila.
The matrix shows you the default loads, broken out by CUCM versions. Simple post, but helpful information. Just the way we like it around here! 
