Connecting To A Serial Port; Connecting To A Service Or Port; Examples - Lantronix SCS Reference Manual

Modem Sharing
Connecting to a TCP listener service is recommended if more than one modem is being used. The SCS will
automatically connect the user to the next available modem, avoiding the trail and error process of finding
an available port (see Connecting to a Serial Port on page 10-4).

10.2.4 Connecting to a Serial Port

To connect directly to an SCS serial port, specify a port number of 30nn or 200nn. The nn represents the
number of the SCS serial port; for example, port 2002 represents SCS serial port 2.
If you're using Telnet to connect to the SCS, connect to port 20nn. The 2000 port is intended for Telnet
connections; it performs Telnet IAC character-escaping negotiations on the data stream. In the example
below, the Telnet command is used to connect to the SCS serial port 3.
% TELNET server_name 2003
If you're connecting via a host application, connect to port 30nn, where nn is the port number. This port
provides an 8-bit clean connection, required by most host applications.

10.2.5 Connecting to a Service or Port

To connect to a local service or port from an SCS login, use the Connect Local command at the Local>
prompt.
Local>> CONNECT LOCAL fastmodems
Local>> CONNECT LOCAL PORT_2
If a service name is specified, a connection is made to the first available port associated with the service. If
a port name is specified, the connection is made to the port unless the port is in use.
Once the connection is established, commands may be issued to the modem attached to the serial port.

10.3 Examples

Users on an IP network need to connect to both a BBS and a commercial online service. The following
modems are available:
Two 28,800 bps modems, reserved for connections to the online service
Four 14,400 bps modems, available for connections to both services
One 9,600 bps modem, reserved for connections to the BBS
Figure 10-10: Telnetting Directly to Port 3
Figure 10-11: Connecting to a Local Service/Port
10-4
Examples