utf-8

OTRS is able to store and work with unicode utf-8. Just set the default charset to utf-8 and OTRS works in force utf-8 mode (frontend and backend).

Example 12-3. Kernel/Config.pm - utf-8

[...]
    # default charset
    # (default frontend charset - "utf-8" is a multi chatset for all possible 
    # charsets - e. g. "iso-8859-1" is also possible for single charset) 
    # [default: iso-8859-1] 
#    $Self->{DefaultCharset} = 'iso-8859-1';
    $Self->{DefaultCharset} = 'utf-8';
[...]