OSI/MHS Orientation Guide

Building Your Message Handling System
OSI/MHS Orientation Guide—424829-001
1-9
What You Need to Do
electronic data interchange, and messaging systems on a variety of platforms. The
network supports workstation access, including low-cost dial-up connections for
asynchronous devices; it also supports interfaces for telex, facsimile, and physical
delivery systems. The role of the NonStop systems is to store and transmit messages,
regardless of type, in a manner consistent with the X.400 Recommendations. The
network accommodates messages and messaging applications following both the 1984
and 1988 versions of the Recommendations. The NonStop systems also provide
management services for the network and can provide access to an X.500 directory.
Configuration steps and considerations vary according to the following factors, among
others:
•
Whether the network is an administration management domain (ADMD) or a
private management domain (PRMD). The X.400 Recommendations state that
only an ADMD may transmit and receive messages across country boundaries.
(The corresponding ISO standards do not include that restriction.) The ADMD
provides services to PRMDs, which typically serve private organizations.
•
Whether a specific connection is to a single UA or a messaging system, and—in the
latter case—whether OSI/MHS or the other messaging system has the role of X.400
service provider.
•
Whether the remote system implements the 1984 or 1988 Recommendations, or a
hybrid (in which 1988 messages are passed over 1984 services).
•
The set of national or international standards or multilateral agreements with which
the network must comply.