CUCM11.5(1)SU1 (i.e. 18.104.22.16800-26) comes with TSP version 22.214.171.124-0, while 11.5(1)SU2 comes with TSP version 126.96.36.199-0. so after upgrading to SU2 you need to upgrade the TSP plugin in order to avoid any issue.
P.S. having different TSP/ CUCM versions may work, but will not be fully be supported.
plugin details can be found in readme files for each CUCM release:
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...