Library /sys$common/syshlp/nclhelp.hlb set, x25_protocol, dte, inbound_dte_class  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Default: No DTE class  Value: Simple-name
    name

    Name of the DTE class to be associated with all incoming calls to
    the DTE. You must specify this characteristic before you enable
    the DTE. The x25 access dte class entity to which the name refers
    must exist when you enable the DTE.

    Example:

    set x25 protocol dte dte-1 inbound dte class lls2-class-0