Short answer - if the compatibility matrix says you need to perform an intermediate upgrade, then it is mandatory. So, an attempt to upgrade directly won't work.
Alternative - if you don't want to do the intermediate upgrade, you can rebuild directly to a new version of CUCM; however, the import/export capabilities of BAT aren't as evolved in 5x as they are in 7.1 so you will essentially be building most of your system from scratch.
Recommendation - follow the upgrade path as defined in the compatibility matrix. Then upgrade immediately from 7.0 to 7.1 and ultimately to 7.1(3b)SU2. This will get you away from the bugs of the 5x release and the 7.0 code as well.
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...