Installation Manual
Maipu Confidential & Proprietary Information
Page 18 of 21
Chapter 4 Cable Description
4.1 Ethernet Interface Cable
SM3300-28FX switch cable is 8-core unshielded twisted pair. 1, 2 is for sending and 3, 6
is for receiving.
Table 4-1 RJ45 through line Cat5
RJ45
Signal
Direction
RJ45
Description
Length
1
TX0+
—>
1
1 twisted
pair
2m
2
TX0-
—>
2
3
RX0+
<
—
3
2 twisted
pair
6
RX0-
<
—
6
4
48V
—>
4
3 twisted
pair
5
48V
—>
5
7
0V
<
—
7
4 twisted
pair
8
0V
<
—
8
Table 4-2 RJ45 cross-wire Cat5
RJ45
Signal
Direction
RJ45
Description
Length
1
TX+
—>
3
1 twisted pair
2m
2
TX-
—>
6
3
RX+
<
—
1
2 twisted pair
6
RX-
<
—
2
4
48V
—>
7
3 twisted pair
5
48V
—>
8
7
0V
<
—
4
4 twisted pair
8
0V
<
—
5
4.2 Ethernet Optical Interface Cable
SM3300-28FX fiber is SM or MM LC interface.
