A CIRCUIT FOR MULTIPLEXING EIA-232 SERIAL PORTS
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-24
This paper describes a circuit for multiplexing EIA-232 serial ports for the purpose of unobtrusive monitoring of the communications that take place between two pieces of equipment. This method pro- vides the ability for a host processor to receive mes- sages transmitted by both pieces of equipment as well as the ability to break the communications path between the two pieces of equipment and take an active part in the communications process.