"Configure the OSI Transport or run over TCP/IP?"

    Answer YES if you want the system to communicate with Phase V nodes,
    you want to run DECnet and/or OSI applications over TCP/IP (RFC1859
    and/or RFC1006), or if you plan to install any OSI applications such
    as OSAK, FTAM, or VT.

                                   NOTE

       If you answer NO to this question, the procedure still loads
       the OSI transport images.  However, OSI Transport is not
       configured or usable until either you run the NET$CONFIGURE
       procedure and answer YES to the OSI Transport question or
       you create an NCL script for OSI Transport use.