Switch by using the pins of RJ45 Jack
Original Publication Date: 2001-Jan-01
Included in the Prior Art Database: 2003-Jun-19
Disclosed is a device to recognize the RJ45 plug or the RJ11 plug inserted into RJ45 Jack automatically. RJ45 is a connector for LAN and RJ11 is a connector for Telephone line. RJ11 has 6 signal lines and RJ45 has 8 signal lines. Because the RJ11 plug is smaller than the RJ45 plug, RJ45 Jack can accept the RJ11 plug. (Fig1) So, it is reported that there are many users who insert the RJ11 plug into RJ45 Jack by mistake. It is desired to have a method to detect the miss insertion and prompt an warning message to the user.