Which logs from which servers would be useful in viewing failed attempts to log in to Jabber?

I am running at 12.5. I am trying to push a config for Jabber. At first i tried using the jabber-config.xml file and that did not seem to be getting pushed down. I then tried doing it via UC service/profile and that did not work either. Is there some...

If a user has extension XXXX and they have all calls forwarded to a cell phone is there a way to have the forwarded calles show up to look that they are getting calls from that extension and not the calling party number?