Page 2-13
Wiring RJ21 Installations
Figure 2-8 Wiring on RJ45 Wall Jack to a Punchdown Block
4
Connect a network interface card or TP-MAU (if you are using a
thick Ethernet card) to the wall jack using twisted pair modular
extension cable.
5
Install and wire an RJ45 wall jack at each device location. An
RJ45 has eight pins. Four of these pins are used for the network:
pins 1, 2, 3, and 6. Connect one pair of wires to pins 1 and 2 on
the RJ45, then connect this wire pair to rows 1 and 2 on the
punchdown block. Connect a second pair of wires to pins 3 and
6 on the RJ45, then connect this wire pair to rows 3 and 4 on the
punchdown block. Be sure you do not reverse the polarity of the
wire pair since this will cause that network branch to fail.
1 2 3 4 5 6 7 8
1
2
3
4
5
8
7
6
-Row 1: TD+
-Row 2: TD-
-Row 3: RD+
-Row 4: TD-
RJ45
10T Hub Ch 2 Page 13 Thursday, August 22, 1996 4:25 PM
