|
|
 Power-off Straight Box Product Description: The power-off straight-through box is mainly used for fast switching of the line, and the connection line can be switched according to the power-on and power-off, through the power-off straight-through box series connection device, and when the device is abnormal, it is quickly switched to another standby line, so as to achieve a quick reply line. The purpose of the connection.
Appearance The front of the power cut-through box consists of RJ48 (ie, the crystal head active line sequence is 1245) and the BNC-Q9 female head.
Each RJ48 mouth communicates with a pair of BNC-Q9 female heads on the left and right sides of the RJ48 port, and the corresponding relationship between the RJ48 mouthline sequence and the BNC_Q9 pins is shown in Table 1. Table 1: Power failure through box front Power off the back of the box When the power-off straight-through box works in the power-off mode, the two adjacent RJ48 ports communicate with each other, and the interworking relationship is shown in Table 2. Table 2: When the power-off straight-through box works in the power-on mode, each RJ48 port on the front of the power-off direct box corresponds to the RJ45 port on the back of the straight box, and the circuits are connected. The corresponding relationship is shown in Table 3. (The Ctrl/Net port on the back of the power cut-through box does not work in the straight-through connection). Table 3: Explanation: In the power-off mode, E1_1_A and E1_1_B are loops in the power-off pass-through mode. The circuit is directly connected. Similarly, E1_2_A and E1_2_B are loops, and the circuit is directly connected.
The power-off straight-through box is connected to the back of the power-off straight box in the energized mode E1_1_A, and is connected to the corresponding line sequence E1_1 of the corresponding port of the power-off direct box; the line corresponding to the port of the power-off straight box is connected to the back of the power-off straight box of E1_1_B. Sequence E1_1 connectivity.
Similarly E1_2 |