Lantronix MSS1-T, Reference Manual

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Using the MSS Interactive Connections
5 - 3
5.1.3 Host Applications
The MSS can be used with applications on Unix, Windows, Windows NT, OS/2, LAT, and
Macintosh hosts, and any other hosts that have a TCP/IP or SPX socket interface.
When a host application makes a socket connection to the MSS, it uses the socket as a data pipe to
send and receive data. The host application performs general read/write tasks, and works with
the MSS as if it were a directly-attached serial device.
There are some important points to remember when making a socket connection.
• Port access must be set to either Dynamic or Remote to allow network connec-
tion requests. Local access does not allow a port to receive connection requests
from the network.
To change the port’s access type, use the Change Access command followed
by either Dynamic or Remote.
• The port must be idle. Use the Show Ports command to verify that the port is
not in use.
NOTE: To ensure that the port will be idle, do not attach a terminal to the serial port to
issue the socket connection command.Telnet to the remote console port instead.
• Only one serial port connection is allowed at a time.
• Timing and serial signals are not preserved.
5.1.4 Code Examples
The MSS distribution CD-ROM includes examples of code for TCP/IP and SPX/IPX applications.
Refer to the Readme file included with the code examples for further information and instructions.
5.2 Interactive Connections
Interactive mode refers to entering commands at the Local prompt. Commands can be used to
configure the MSS, connect to remote services, manipulate a connection, or receive feedback.
5.2.1 Session Control
When a user makes a connection to a service on the network (via Telnet, Rlogin, SPX, or LAT), a
session
is created. A user can have several connections to various services at once, although only
one is displayed on the screen at a time. Each separate connection is a session.
5.2.1.1 Break Key
The Break key allows users to leave an active session and return to the MSS’s Local prompt
without disconnecting sessions. By default, the MSS handles the Break key locally. Users can
change whether the Break key is processed by the MSS (Local), processed by the remote host
(Remote), or ignored (None) using the Change Break command.
Figure 5-6: Changing Break Key
Local>> CHANGE BREAK REMOTE