As others have stated, you will require a new license file in order to upgrade to IPCCX 4.0. However, my additional insight is this:
Unfortunately, the documentation indicates that you are emailed a PAK code when you go through the PUT process. This is not accurate. Nor will your media contain a PAK sticker on it like it typically does.
The only solution is to open up a case with Cisco (email@example.com), refer to your upgrade order number (included in the PAK-related emails from firstname.lastname@example.org) and send them an existing license which they will convert.
In all three 3.5->4.0(4) upgrades I've done, it's taken more than one try with licensing@ to get the new licenses "completely" right. But the licensing folks are pretty on the ball.
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...