Hi I had this same issue today where I received a "sync after switch failed" error. The problem turned out to be with DNS, make sure you are able to resolve the hostname of the server, not just it's fully-qualified-domain-name (FQDN).
For example if your server is named SERVER1, make sure SERVER1 resolves, and not just SERVER1.domain.com.
With my server, SERVER1.domain.com was resolving, but not SERVER1. Once I added an entry in DNS for SERVER1, I was able to switch versions without issue.
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...