Here are 3 standards - If you don't know which one to use, then use T568B
10Base-T Wiring Chart Pin Color Signal 1 White-Blue TD+ 2 Blue TD- 3 White-Orange RD+ 4 - - 5 - - 6 Orange RD- 7 - - 8 - -
T568A Wiring Chart Pin Color Signal 1 White-Green T3 2 Green R3 3 White-Orange T2 4 Blue R1 5 White-Blue T1 6 Orange R2 7 White-Brown T4 8 Brown R3
T568B Wiring Chart Pin Color Signal 1 White-Orange T2 2 Orange R2 3 White-Green T3 4 Blue R1 5 White-Blue T1 6 Green R3 7 White-Brown T4 8 Brown R4
A 10Base-T Cross-over swaps TD and RD. That is, swap pins 1 and 3 as well as pins 2 and 6, on one end of the cable.
AT&T 258A wiring is comparable to T568B
Serial Pinout Applications Connector Pinout Connect to Pretend to be DB25-M DCE Modem IBM PC 25-pin DB25-M DTE Terminal DB25-F DTE IBM PC 25-pin Modem DE9-M DCE Mouse IBM PC 9-pin DE9-F DTE IBM PC 9-pin
Serial Pinout DetailsRJ45 Pin Wire Color DTE DCE Name DB9 DB25 Name DB9 DB25 1 blue CTS 8 5 RTS 7 4 2 orange DCD 1 8 DTR 4 20 3 black TD 3 2 RD 2 3 4 red Gnd 5 7 Gnd N/C 1 5 green Gnd N/C 1 Gnd 5 7 6 yellow RD 2 3 TD 3 2 7 brown DTR 4 20 DCD 1 8 8 white RTS 7 4 CTS 8 5
