3Com 1100 manual Modem Cable, RJ45 Pin, Assignments, Pin Number Signal Function

42APPENDIX B: PIN-OUTS

Modem Cable 9-pin to RS-232 25-pin

RJ45 Pin	Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45
Assignments	connectors
	Table 6 Pin assignments

Pin Number	Signal	Function
Ports configured as MDI
1	TxData +	Transmit data
2	TxData –	Transmit data
3	RxData +	Receive Data
4	Not assigned
5	Not assigned
6	RxData –	Receive data
7	Not assigned
8	Not assigned
Ports configured as MDIX
1	RxData +	Receive Data
2	RxData –	Receive Data
3	TxData +	Transmit data
4	Not assigned
5	Not assigned
6	TxData –	Transmit data
7	Not assigned
8	Not assigned