02/05/2003 

Problem:  What are the pin arrangments for RJ-45 network connectors?

Solution:

Assuming a 4-pair twisted pair cable use the following figure and table:

Pin#	Pair		Wide Stripe	Thin Stripe	CNC Function	Base-T Function	Telephone Function
1	3	tip	white	green	DCD	xmit+
2	3	ring	green	white	DTR	xmit-
3	2	tip	white	orange	RTS	recv+
4	1	ring	blue	white	RD	unused	ring
5	1	tip	white	blue	RD REF	unused	tip
6	2	ring	orange	white	CTS	recv-
7	4	tip	white	brown	GND	unused
8	4	ring	brown	white	TD	unused

The assignments shown conform to EIA standard 568A.

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