Specifications

Hardware Reference 19
C613-03059-00 REV E
1000BASE crossover cable
For 1000BASE test cables, all four pairs are used and the cable is wired in either
a crossover or straight-through configuration. Table 7 on page 19 lists the pin
assignments for a crossover cable.
Test Facility
This section introduces the Test Facility. The Test Facility is built into all
AT-9800 Series software. For detailed information on operating the Test Facility,
see the Test Facility chapter of the AT-9800 Series Software Reference.
Any interfaces being tested are dedicated to the Test Facility. The Test Facility
can be thought of as a specialised interface module like PPP or Frame Relay.
Before using the test facility, disable any configurations (SET
CONFIGURATION=NONE) and restart or reboot the switch.
3 Pair 2+ 3 Pair 2+
6 Pair 2- 6 Pair 2-
4 Pair 3+ 4 Pair 3+
5 Pair 3- 5 Pair 3-
7 Pair 4+ 7 Pair 4+
8 Pair 4- 8 Pair 4-
Table 7: Pin assignments, 10/100/1000BASE-T RJ-45 four pair crossover
cable .
End 1 End 2
Pin Pair Pin Pair
1 Pair 1+ 1 Pair 2+
2 Pair 1- 2 Pair 2-
3 Pair 2+ 3 Pair 1+
6 Pair 2- 6 Pair 1-
4 Pair 3+ 4 Pair 4+
5 Pair 3- 5 Pair 4-
7 Pair 4+ 7 Pair 3+
8 Pair 4- 8 Pair 3-
Table 6: Pin assignments, 10/100/1000BASE-T RJ-45 four pair straight-through
cable. (Continued)
End 1 End 2