OSI/MHS Configuration and Management Manual

Planning Your OSI/MHS Subsystem
OSI/MHS Configuration and Management Manual—424827-003
3-4
Using OSI/MHS to Communicate With the Transfer
Subsystem
In planning your OSI/MHS subsystem, you must consider your subsystem, each
adjacent MTA, and each nonadjacent MTA through which you want to transfer
messages.
Appendix B, Configuration Checklists, contains checklists for:
•
Describing your subsystem
•
Planning an adjacent MTA
•
Planning a nonadjacent MTA
Using OSI/MHS to Communicate With the Transfer Subsystem
You can transfer X.400 messages to and from the Transfer subsystem through the
Transfer X400 gateway. With this gateway, the format of a Transfer message is
translated into a format defined by the X.400 standards. The Transfer X400 gateway
allows Transfer correspondents to exchange messages with users of different
X.400-based messaging systems.
If you plan to use the Transfer X400 gateway, you must consider the following:
•
How many and what type of APPL objects (generic or specific) will you define?
•
What is your expected message volume and how will it affect availability?
Message volume affects the number of entry manager processes you want to use.
(You can have up to five entry manager processes per gateway object.) Message
volume also determines the size of the entry manager queue files and log queue
files.
You configure a Transfer X400 gateway through the GATEWAY object. You configure
a Transfer application through the APPL object of the GW type.
The Transfer X400 gateway supports messages of up to 2 MB.
Appendix B, Configuration Checklists, contains checklists for:
•
Configuring a Transfer X400 gateway
•
Configuring a Transfer application (APPL object)
See the Transfer Installation and Management Guide for specific information about the
Transfer X400 gateway.
Using OSI/MHS GPI to Communicate With Proprietary Systems
Through the Gateway Programmatic Interface (GPI), you can develop a client
application that provides users of your proprietary system with access to the X.400
network through the OSI/MHS subsystem. Your program and the GPI service function
together as a normal X.400 gateway or a P1 user exit gateway.
If you plan to use the GPI, you must consider the following:
•
How many and what type of APPL objects (generic or specific) will you define?