The X.25 Access module resides in the Application layer of the Digital
    Network Architecture (DNA). It interfaces with the X.25 Protocol,
    X.25 Client, and X.25 Server modules to provide X.25 services and
    functions as described in the DNA X.25 Access Architecture.

1  –  Subentities

    The entity hierarchy for the X25 Access module is:

                         _DTE_Class
                        |_Reachable_Address
                        |_Port
    Node___X25_Access___|_Filter
                        |_Security_DTE_Class___Remote_DTE
                        |_Security_Filter
                        |_Template
                        |_Application

    The X25 ACCESS entity is the top-level entity in the X.25 Access
    module hierarchy of entities.

    An X25 ACCESS DTE CLASS entity defines a named class of DTEs.
    The class-name refers to the class managed by this command. A DTE
    class may refer to either of the following:

    o  A group of local DTEs.

    o  A group of DTEs on a remote gateway system.

    An X25 ACCESS FILTER entity defines the criteria by which the
    destination of an incoming call is determined.

    When the x.25 access entity is created, the network manager must
    create an x25 access filter entity with the name osi transport.
    This filter is used by the osi transport entity. The filter-name
    refers to the filter managed by this command.

    An X25 ACCESS PORT entity represents an X.25 virtual circuit.
    Ports are created and deleted automatically as circuits are
    established and cleared. The port-name refers to the port managed
    by this command

    An X25 ACCESS REACHABLE ADDRESS entity maps a destination Network
    Service Access Point (NSAP) address in an outgoing call to a DTE
    class/DTE address pair. The address-name refers to the address
    managed by this command.

    An X25 ACCESS SECURITY DTE CLASS entity is used to control
    inbound and outbound calls. The class-name refers to the class
    managed by this command.

    An X25 ACCESS SECURITY DTE CLASS REMOTE DTE entity is a
    collection of access control attributes that control inbound
    calls from and outbound calls to a particular remote DTE.

    An X25 ACCESS SECURITY FILTER entity is a collection of access
    control attributes that controls access to one or more filters.
    The filter-name refers to the filter managed by this command.

    An X25 ACCESS TEMPLATE entity is used to supply default values
    for call parameters when an outgoing call is made. Values in a
    template can be overridden by user-supplied values.

    For Tru64 UNIX, two x25 access template entities need to be
    created by the network manger: the default and OSI Transport
    templates. These templates are generated automatically if you run
    either the basic or advanced configurator.

    An X25 ACCESS APPLICATION entity defines an application to be
    initialized for an incoming call. The application-name refers to
    the application managed by this command. An application type may
    be one of the following:

    o  X.25

    o  X.29

    o  X.29 Login