Understood, but, that's a different feature. The UCM will send presence notifications to IMP so Jabber can update if you're "on a call" and that, but, if you set yourself away/in a meeting it doesn't change the BLF presence to amber - it doesn't appear to have that sort of capability.
I want to make sure I am understanding this correct. For example, if you have an 8861 phone with a configured BLF for a DN of a Jabber user. If the Jabber user changes their Jabber status to Busy, does the 'presence' indicator on the 8861 phone change to amber? Not the actual BLF light for the button, but the status indicator next to the configured BLF on the device.
If that makes sense to what you are asking, I can tell you from my experience the answer is no. We have Jabber users and when their status in Jabber is busy or in a meeting, the status indicator on the phone does not change, it stays green. The only time the status indicator changes is when they are actually on a call and at that point the BLF light is lit up and the status indicator is amber.