All the phones work on 8.6. I would strongly suggest that you upgrade the phone firmware of all the phones while study are stroll registered to ccm4. This way when you do upgrade you will not have any surprises with phones not working due to not being able to upload the new firmware. You will need to look at each phone and check the firmware upgrade path.
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...