Disabling ATS and RIS File Generation
You can prevent the generation of ATS or RIS files, or both.
To prevent the generation of both ATS and RIS files, set
the CDR_DISABLE_SPOOL environment variable to 1.
To prevent the generation of either ATS or RIS files, set the ATS or RIS directory to /dev/null (UNIX) or NUL (Windows) with the cdr define server or cdr modify server commands.