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

    Default: 33            Value: 0-255 (except 32)

    The NSAP selector to use for the Connection-Oriented Transport
    Service (COTS) when running over CLNS. If 0 or 1, COTS over CLNS
    is not enabled. This attribute cannot be set to 32, which is the
    value of the NSP NSAP selector. Or, on Tru64 UNIX, to the current
    setting of the osi transport attribute cltp nsap selector if it
    is other than 0 or 1.

    This attribute cannot be modified when transport is enabled.

    set [node node-id] osi transport nsap selector integer

    Example:

    set osi transport nsap selector 33