OSI/MHS Configuration and Management Manual

Introduction to OSI/MHS
OSI/MHS Configuration and Management Manual—424827-003
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Architecture
OSI/MHS is an application built upon Open Systems Interconnection/ Application
Services (OSI/AS) and its underlying subsystems. You must have OSI/AS, Open
Systems Interconnection/Transport Services (OSI/TS), and either the X.25 Access
Method (X25AM) or the LAN Access Method (TLAM) or installed and operating before
you can configure the OSI/MHS subsystem. On G06 and later RVUs you must use
PAM to configure OSI/MHS. You also need the Transaction Management Facility
(TMF) and, if you are using message stores, the NonStop Structured Query Language
(SQL).
To communicate with other X.400 networks over the Internet, you need all of the above
software plus TCP/IP.
Figure 1-2. Overview of a OSI/MHS Subsystem
003VST .VSD
OSI/MHS Subsystem
Remote
User
Local
User
Remote
User
Local
User
RS
RS
MS
MS
LO
GI
Gateway
LO
LOGICAL
MTA
(MR Class)