CallPilot reporter is part of the CallPilot manager application, and is available when you install CallPilot manager on a standalone server.
If you have the physical media used to install your CallPilot server, then you already have a copy of the applicaiton. If your CallPilot has had patches applied, then you will likely not be able to use the version on your install media, but will need the CallPilot manager PEP that is currently running on your server.