Specifications

Hardware Reference 37
C613-03023-00 REV P
Figure 27: Ethernet twisted pair (TP) loopback plug
Figure 28: Primary Rate ISDN loopback plug
Figure 29: Basic Rate ISDN loopback plug wiring diagram
Not
connected
Not
connected
•Not
Twisted Pair (TP) Loopback Plug (RJ45 connector)
1
2
3
4
5
6
7
8
12345678
End view
of plug
TX+
TX-
RX+
RX-
TPLOOP
PRI Loopback Plug (RJ45 connector)
1
2
3
4
5
6
7
8
12345678
Switch or router
end view
TX+
TX-
RX+
RX-
P120LOOP
BRI Loopback Plug (RJ45 connector)
1
2
3
4
5
6
7
8
12345678
Router end view
of plug
Not connected
Not connected
Not connected
Not connected
TX+
RX+
RX-
TX-
BRILOOP