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

    Modifies the CONS NSAP Addresses attribute of the OSI Transport
    entity to remove the specified NSAP or NSAPs.

    remove  [node node-id] osi transport -
          cons nsap addresses {nsap[,nsap...]}

    CONS NSAP Addresses is a set of the valid NSAP addresses for use
    with CONS.  One or more NSAPs must be specified to run COTS over
    CONS.  See the DECnet-Plus Planning Guide for more information.