User Guide

The AXIS 2490 in Your Application AXIS 2490 User’s Manual
10
Telnet RFC2217 Options
COM port control according to RFC2217 uses telnet options in the data stream to
encapsulate status and control information. It can be used to control the state of the
control outputs (RTS and DTR) and to monitor the state of inputs (CD, DSR, CTS and RI). It
can also be used to control the COM port settings, such as baudrate, parity settings etc. A
COM port redirector that supports RFC2217 will configure the baud rate etc., to the
configuration set by the application on the PC.
Remote access using a COM port redirector
Many applications require local serial ports for their function and will not work with a
networked serial port, which is what you’ll have when using the AXIS 2490. To make the
server’s ports appear to the application as if they were local ports, you must install and use
additional software - a COM Port Redirector. This software allows programs (especially
older ones) that use Windows serial port drivers to be used over a network. The application
itself runs as usual, with no modifications.
Note: For more information about COM-port Redirectors, please see the AXIS 2490 product pages on
the Axis website att www.axis.com.