Library /sys$common/syshlp/nclhelp.hlb show, x25_access, Characteristics  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 o  maximum active ports

    Default: Implementation specific       Value: Implementation specific

    Total number of ports that can be active simultaneously. You
    cannot modify this characteristic. It is supplied as an argument
    to the create directive.

 o  version

    Default: Current version number

    Version number of the X.25 architecture specification to
    which the implementation conforms. You cannot modify this
    characteristic.