Library /sys$common/syshlp/latcp$help.hlb SET, PORT, Qualifiers, /QUEUED  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /QUEUED
       /NOQUEUED

    Specifies queued or nonqueued access to the server port. A queued
    or nonqueued request is accepted by a terminal server if a
    remote port is free. If the remote port is busy and queuing is
    enabled on the terminal server, then the server queues the remote
    request. If you do not want your remote requests to be queued on
    the server, specify /NOQUEUED.

    Not specifying either the /QUEUED or /NOQUEUED qualifier results
    in queued access to the server port. This is the default.