Depending on the exact model of 7845H2, you can run 8.6.2 on them (I am !)
If you upgrade the RAM to 8GB, and the discs to 146GBs, then you're fine. (Actually, if you're just after a bridge upgrade, you can probably get away without replacing the HDs. The installer only checks for 72GB HDs)
This URL shows the compatibility of servers & CUCM:
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...