3.1. The simple way - Installation of pre-built packages
From open-support.info
The simplest and most comfortable way to install OTRS is to use pre-built packages. You can find them in the download area on http://www.otrs.org . The following sections describe the installation of OTRS with a pre-built or binary package on SUSE, Debian and Microsoft Windows systems. Use pre-built packages to install OTRS and only setup OTRS manually, if you have no other possibility.