JIRA integrated Jira integrates with TeamCity continuous server through the application link. The procedure of adding an application link differs a little bit for different JIRA Jira versions.
From 1.7.0 version the add-on supports integration with multiple TeamCity servers. For each TeamCity instance, you need to have an individual application link.
See the next pages, for details on how to configure an application link for your JIRA Jira version: