Allied Telesis AR700 Series - page 57

Hardware Refe rence 57
C613-03087-00 Rev E
Some interfaces (e.g., the synchronous ports) require a specially built external
testing device (available from your authorised Allied Telesis distributor or
reseller) to be used in conjunction with the Test Facility.
Tabl e 12 lists the loopback plug wiring diagrams for each interface type.
Figure 31: RJ-45 loopback plug for testing asyn interfaces AR725, AR745 or AT-AR024
Figure 32: RJ-45 loopback plug for testing asyn interfaces on AR750S, AR750S-DP, or
AR770S
Figure 33: Ethernet twisted pair (TP) loopback plug
Table 12: Loopback plug pin wiring diagrams
Physical Interface Loopback Pin Wiring Diagram
RJ-45 asynchronous interface on AR725, AR745 or
AT-AR024
Figure 31
RJ-45 asynchronous interface on AR750S, AR750S-DP or
AR770S
Figure 32
Ethernet TP interface Figure 33
1
2
3
4
5
6
7
8
(RING)
(DCD)
(DTR)
(GND)
(RXD)
(TXD)
(CTS)
(RTS)
12345678
End view
of plug
RJ45LOOP_ar7x5
1
2
3
4
5
6
7
8
(RTS)
(DTR)
(TXD)
(GND)
(GND)
(RXD)
(DCD)
(CTS)
12345678
End view
of plug
rj45loop_ar750
Not connected
Not connected
Not connected
Not connected
1
2
3
4
5
6
7
8
12345678
End view
of plug
TX+
TX-
RX+
RX-
TPLOOP_ar700