VMS Help DECnet-Plus, DCL Commands, SET, HOST, /X29, Qualifiers, /FACILITIES=(number-list)  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /NOFACILITIES

    (Default=/NOFACILITIES)

    This qualifier specifies a list of numbers, in  the  range  0  to
    255,  which are in the 'local facilities field' in the NCB (refer
    to the X.25 Programming Reference manual for details of the NCB).

    This list specifies some local facility not covered  by  the X.25
    software.   This  field  is not checked so the network may reject
    the call if you request an invalid facility.