Contents. Intra-Rack Alarm Concatenation Cable. External Alarm Concatenation Cable. The OptiX OSN 9500 rack internal connection, страница 5

Figure 7-13 Network connector RJ45

2.  Cable

The OptiX OSN 9500 uses straight through cable or cross-over network cable. Its structure is shown in Figure 7-14.

(1) Network interface connector

(2) Label

W: Category-5 twisted pair

Figure 7-14 Network cable

3.  Connections

There are two types of network cable, namely crossover cable and straight-through cable, available for connecting NM computer with gateway NE. The crossover cable is used to directly connect the gateway NE with the NM computer. The straight-through cable is used to connect the gateway NE with the NM computer through a HUB. They differ in the connection of internal cores.

Table 7-7 The connections of two types of network cable

Type of connection	Applications	Differences
Cross-over network cable	Connecting NM computer with gateway NE	Internal core connection
Straight through cable	Connecting NM computer with gateway NE through HUB

Table 7-8 The pin assignment of straight-through network cable

Head connector	8-core category-5 twisted pair	Tail connector
Pin 1	White (orange)	Pin 1
Pin 2	Orange	Pin 2
Pin 3	White (green)	Pin 3
Pin 4	Blue	Pin 4
Pin 5	White (blue)	Pin 5
Pin 6	Green	Pin 6
Pin 7	White (brown)	Pin 7
Pin 8	Brown	Pin 8

The pin assignment of cross-over network cable is shown in Table 7-9.

Table 7-9 The pin assignment of cross-over connection

Head connector	8-core category-5 twisted pair	Tail connector
Pin 1	White (orange)	Pin 3
Pin 2	Orange	Pin 6
Pin 3	White (green)	Pin 1
Pin 4	Blue	Pin 4
Pin 5	White (blue)	Pin 5
Pin 6	Green	Pin 2
Pin 7	White (brown)	Pin 7
Pin 8	Brown	Pin 8

4.  Specifications

Type	Category-5 twisted pair
The number of cores	8
Typical resistance	100 ohm ±15%
Attenuation (100 MHz)	22 dB/100 m
Color	Grey
Length	5 m, 10 m and 20 m

7.3.8  External Alarm Concatenation Cable

1.  Structure

Figure 7-15 shows the structure of alarm concatenation cable.

1. Label	Pos.1: the position of pin 1
Pos.9: the position of pin 9

Figure 7-15 The external view of alarm concatenation cable

2.  Pin Assignment

Table 7-10 lists the pin assignment of alarm concatenation cable

Table 7-10 The pin assignment of alarm concatenation cable

Connector X	Color of core	Remarks
1	Black	Ground
6	Black/white	Major alarm
3	Red	Ground
7	Red/white	Emergency alarm
4	Brown	Ground
8	Brown/white	Auxiliary alarm 1
5	Orange	Ground
9	Orange/white	Auxiliary alarm 2

3.  Specifications

Type	UL2464
The number cores	4 P
Color	PANTONE WRAM GRAY 1U
Length	10 m

7.3.9  Alarm Output Cable

1.  Structure

The structure of alarm output cable is shown in Figure 7-16.

1. Label	Pos.1: the position of pin 1
Pos.9: the position of pin 9	W1–W8: core ID.

Figure 7-16 The external view of alarm output cable

2.  Core Assignment

Table 7-11 lists the core assignment of alarm output cable.