Esquema de configuración del conector db9 a rj45

Conector DB9 Conector RJ45
Pin 2 >>>>>>>>>>>>>>>> Pin 6
Pin 3 >>>>>>>>>>>>>>>> Pin 5
Pin 5 >>>>>>>>>>>>>>>> Pin 4
Pin 4 >>>>>>>>>>>>>>>> Pin 3

Basado en http://www.adslnet.ws/modules.php?name=News&file=article&sid=363