What are the pin arrangements for RJ-45 network connectors?

Export to PDF | Export to DOC

Problem: What are the pin arrangements 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.

Leave a Reply

Your email address will not be published. Required fields are marked *