Installation guide

RFC2217 Mode
Users who want to communicate with a NETRS232 across gateways or routers can configure a port on a NETRS232 to
operate in RFC 2217 mode, allowing serial port configuration commands and serial data to be sent to a NETRS232
using the RFC 2217 framework for serial port control over Telnet. For those not familiar with RFC 2217 (the Telnet COM
Port Control Option), the text of the actual RFC (Request For Comments) is available at www.faqs.org/rfcs/rfc2217.html
or at any number of other sites.
This mode opens a NETRS232 port when a TCP connection is established to the "local port". Port settings are embed-
ded in data stream in accordance with RFC 2217.
Applications: UNIX systems and other platforms that have RFC 2217 Telnet capability can access and control the serial
COM port of the NETRS232.
Data Connect Mode
Data Connect mode combines Raw Client mode and Raw Server Mode. In this mode, the NETRS232 will either initiate
a TCP connection when activity is detected at the serial port, or it will receive TCP packetized serial data from the net-
work port when an outside client connects to it.
The configuration parameters for this mode combine all the parameters found in Raw Client and Raw Server modes
(see above for details).
With two NETRS232s in this mode placed "back to back," the connection between them becomes in effect a cable
extender over an Ethernet connection.
Applications: Data connect mode provides a serial-to-serial communication link that would not be practicable to
implement as a directly-wired link; it can replace serial cables with an Ethernet connection.