You use an X.25 X.400 service MTA stack with an X.400 connector
to connect an Exchange server to another system. The server on
which you install the stack processes all messages from X.25 X.400
connectors that reference the stack.
The advantage of an X.25 X.400 service stack is that you can
support existing X.25 protocols. The disadvantage of an X.25 X.400
service stack is that you must verify that local and remote
bridgehead servers and routers can support the X.25 protocol.
Right-click X.400, click New, and then click
X.25 X.400 Service Transport Stack.
On the General tab, type a name for this transport stack
in the Name box. The default is X.25 (servername).
You can edit this name only when creating a new transport
(Optional) To enter the X.121 address of the remote server as
specified in the X.25 network service setup, on the General
tab, in X.121 address, type the X.121 address.
(Optional) To specify additional connection data required by
the X.25 provider, on the General tab, in Call user
data, type the additional information. In Facilities,
type options you want from the X.25 provider, such as /r for
the reversal of charges.
(Optional) To further define the connector address for cases in
which other services or applications are using the same transport
stack, on the General tab, click OSI, to enter
address information. For the display of the address
information, select Hexadecimal or Text. Enter
hexadecimal characters or text characters for the T selector
(transport service access point), S selector (session
service access point), and P selector (presentation service
(Optional) To specify the X.25 adapter port number, on the
General tab, in I/O port, type a number between 0 and
255. The default is 1. The input/output (I/O) port you specify must
not match the value of any other X.25 X.400 transport stack on the
(Optional) To add notes regarding administration of this stack,
such as details about the remote system, on the Details tab,
in Administrative note, type pertinent information.
(Optional) After you create the X.400 stack, you can view the
connectors that are using the stack by viewing the
Connectors tab. You can only delete a stack when no
connectors are using it. Thus, before you delete a stack you must
either delete the connectors using it or configure them to use a
different stack. By viewing the Connectors tab, you do not
need to check all your connectors to see if they are using the