This has been discussed numerous times. You may want to search for terms like "push background image" or "force background image" or just "background image" if you want to find a wealth of discussion on this topic.
As an alternative, you can read through this blog I put together a while back that summarized my take on the various threads and options available to you.
BTW, there is no global list.xml solution that you can use. There are viable options though. I touch on the ones I came across (filtered of course) here:
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...