Source : Free On-Line Dictionary of Computing

Universal Communications X
     
         (UCX) A software implementation of the
        ubiquitous {TCP/IP} suite of {communications} {protocols} for
        {Digital Equipment Corporation}'s {OpenVMS} {operating
        system}.
     
        Users of the {UCX} product can connect to heterogeneous
        {networks} to access and {download} files, send {electronic
        mail}, run and develop {applications}, and monitor activity.
     
        {"Software Product Description, DIGITAL TCP/IP Services for
        OpenVMS, Version 4.2",
        (http://www.digital.com/info/QAW009/QAW009HM.HTM)}.
     
        (2000-12-15)