Plaintree Systems Inc. is a publicly traded company on the  Toronto Stock Exchange. In existance since 1988, it is actively  engaged in research, development, marketing and sales of its  wireless infrared local area network connectivity product line,  as well as high quality network switches. The wireless uses Infrared as the medium in which data, voice  and video is transmitted across the airwaves. They operate in  the physical layer as a seamless replacement for cable as well  as an alternative to radio frequency wireless products. The  Plaintree connectivity solution is license exempt  worldwide with transmission data rates of 10Mbps Ethernet or  16/4 Mbps Token Ring data rate. With its ability to cover distances up to 4 kilometers in a  single hop, the wireless infrared connectivity solution  is ideal for a variety of configurations including  interbuilding, intrabuilding, factory and open office  applications. Longer transmission distances can be achieved by  connecting the units in a multihop configuration (units  connected back to back), in accordance IEEE 802.3 requirements. Plaintree wireless LED based Ethernet and Token Ring product  lines are solving corporations' connectivity issues successfully  worldwide. Plaintree's Research and Development team is  continuing with the integration of digital voice and Ethernet  data along with addressing Fast Ethernet and speeds beyond 155  Mbps. Rugged, Rudundant, Reliable are the three R's of Plaintree's  network WaveSwitches. They can be found in the Canadian and US  military's arsenal of networking gear, proving their outstanding  performance. Our leading edge engineering has made the  Plaintree name synonymous with the very highest quality. Plaintree continues to build prosperous business relationships  around the globe.