Specifications

18 AT-9800 Series Switch

C613-03059-00 REV E

Cables for RJ-45 Ethernet LAN Interfaces

For 10BASE-T/100BASE-TX/1000BASE-T (10/100/1000BASE) connections, a

twisted pair cable with four pairs and RJ-45 connectors must be used.

Table 5 on page 18 lists the cables used for network connections and testing of

RJ-45 interfaces.

Caution. Do not plug a phone jack into any RJ-45 port. Doing so could damage

the switch. Use only twisted pair cables with RJ-45 connectors.

Pin assignments

For twisted pair cables each pair is identified by two different colours. For

example, one wire might be red, and the other red with a white stripe. An RJ-45

connector must be fitted to both ends of the cable. Figure 7 on page 18

illustrates the pin layout for RJ-45 connectors.

Figure 7: RJ-45 Pin layout.

1000BASE straight through cable

For 1000BASE network connections, all four pairs are used and the cable is

wired in a straight-through configuration. This cable can also be used, in

conjunction with the software test facility, to test 1000BASE network ports.

Table 6 on page 18 lists the pin assignments.

Table 5: Cables for RJ-45 LAN interfaces.

Purpose Interface type Cable type Pairs Pin assignment

Network 10/100/1000BASE Straight through Four Table 6 on page 18

Test 10/100/1000BASE Crossover or straight through Four Table 7 on page 19 or

Table 6 on page 18

Table 6: Pin assignments, 10/100/1000BASE-T RJ-45 four pair straight-through

cable.

End 1 End 2

Pin Pair Pin Pair

1 Pair 1+ 1 Pair 1+

2 Pair 1- 2 Pair 1-

RJPIN