Pin-outs 149Modem Cable 9-pin to RS-232 25-pinRJ-45 PinAssignmentsPin assignments are identical for 10BASE-T and 100BASE-TX RJ-45connectors.Table 13 Pin AssignmentsScreenTxDRxDRTSCTSDSRGroundDCDDTRScreenTxDRxDRTSCTSDSRGroundDCDDTRShell327865141234567820Webcache 1000/3000Cable connector: 9-pin femaleRS-232 Modem PortCable connector: 25-pin malePin Number Signal FunctionPorts configured as MDI1 Transmit Data + Bidirectional Data A+2 Transmit Data + Bidirectional Data A-3 Receive Data + Bidirectional Data B+4 Not assigned Bidirectional Data C+5 Not assigned Bidirectional Data C-6 Receive Data – Bidirectional Data B-7 Not assigned Bidirectional Data D+8 Not assigned Bidirectional Data D-Ports configured as MDIX1 Receive Data + Bidirectional Data B+2 Receive Data - Bidirectional Data B-3 Transmit Data + Bidirectional Data A+4 Not assigned Bidirectional Data D+5 Not assigned Bidirectional Data D-6 Transmit Data – Bidirectional Data A-7 Not assigned Bidirectional Data C+8 Not assigned Bidirectional Data C-
