Unstable connection — If the fiber optic connector in the fiber distribution box falls off or ages, the optical signal will be attenuated, resulting in an unstable connection
The unstable fiber connection is mainly manifested in:
1. The connection attenuation is large, and the received optical power decreases, resulting in an increase in the bit error rate of the link, and in severe cases, the link will be completely broken;
2. Increased connection jitter affects the transmission of high-speed services;
3. The intermittent connection is interrupted, and the link is intermittent.
The root cause of unstable optical fiber connection is that the connector is easy to loosen, and the optical fiber is detached and degummed. During long-term use, the connector is subjected to external forces, and the aging of the internal adhesive layer is the main factor causing this problem. The uneven quality of some low-quality connectors can also exacerbate this problem.
To improve connection stability, you can start from the following points:
4. Choose high-quality connectors and jumpers, and the internal rubber layer will age slowly;
5. Ensure that the connector is installed in place and the shell is tight to avoid external force;
6. Regularly check the connection quality, and replace the seriously aging connectors in time if any problems are found;
7. Regularly calibrate the connector to ensure good alignment of the fiber core;
8. Avoid excessive bending and degumming of optical fiber;
9. Make a maintenance plan and replace key connectors regularly.
Through the use of high-quality products, standardized operation and maintenance measures, the problem of unstable connection in the optical fiber distribution box can be avoided and reduced as much as possible, and the quality of network operation can be guaranteed.
Insufficient access ports — The fiber distribution box has a limited number of access ports, and if the demand exceeds its number of ports, it will not be able to meet.
A certain number of optical fiber access interfaces are provided in the optical fiber distribution box for the connection of network equipment or optical cables. However, with the growth of network traffic, these preset access ports are often not enough to meet actual needs. Specific reasons include:
1. The distribution box has a limited number of ports, usually dozens or even hundreds of ports at most. However, the network requirements in large computer rooms and buildings usually exceed this amount.
2. The space for business growth is not considered, and the capacity of the distribution box can only meet the existing demand and cannot cope with new business.
3. The user and business layout changes frequently, but the access location of the original distribution box does not match the new requirements.
4. The original distribution box technology is aging, and the interface type cannot meet the requirements of new services for high-speed and high-density connections.
Insufficient access ports will directly result in the inability to connect new devices and cables, and fail to meet business deployment requirements.
To solve this problem, you can do the following:
5. Add a high-density distribution box to expand the number of access ports.
6. Reserve important nodes and reserve interface resources to meet future needs.
7. Choose the distribution box with modular design, which can expand the interface flexibly.
8. Adopt high-density interface types, such as MSC, MPO, etc., to increase the connection capacity of a single distribution box.
9. Optimize the allocation scheme to make more effective use of interface resources.
10. Upgrade old distribution boxes with outdated technology and tight interface resources.
Foreseeing demand changes and planning access resources in advance is the key to ensuring that the distribution box has room for expansion.
Confused distribution management — If the optical fibers in the optical fiber distribution box are not managed in a standardized manner, it will become difficult to identify, locate, and troubleshoot lines.
1. The direction of the optical cable is disordered, and there is a lack of neat laying organization.
2. The fiber jumpers are randomly stacked, which is not neat enough.
3. Without perfect label identification, it is impossible to quickly identify the corresponding relationship between optical fiber ports and lines.
4. The resource allocation records are not comprehensive, and it is not known which services the interface is occupied by.
5. There is no wiring diagram, so it is impossible to locate the wiring during maintenance.
The consequences of these problems are:
6. New line docking and troubleshooting are inefficient.
7. When a problem occurs, it cannot be accurately located, prolonging the troubleshooting time.
8. Increased resource allocation and management costs.
9. The stability of the system is poor.
To improve fiber management, the following measures are required:
10. Formulate optical cable arrangement specifications to ensure that the cables are neat and uniform.
11. Arrange jumpers reasonably to prevent disorderly accumulation.
12. Improve the labeling system, one-time identification of ports and cables.
13. Record a complete resource allocation sheet.
14. Draw an accurate wiring diagram.
15. Regularly check the optical fiber management situation, and rectify any problems found in time.
Standardized cable management can greatly improve the use efficiency and maintainability of the fiber distribution box, and is one of the important measures to ensure the long-term stable operation of the network.
Poor waterproof performance — The waterproof design of some optical fiber distribution boxes is not good enough, and it is easy to get damp when exposed outdoors.
When the optical fiber distribution box is placed outdoors, it is easy to be corroded by rain and moisture. If its waterproof performance is not done well, it is likely to cause the following consequences:
1. Severe condensation and accumulated water in the cabinet will lead to performance degradation of optical components such as connectors and adapters.
2. The humid environment accelerates the corrosion of metal materials and affects the mechanical properties.
3. After the circuit board is damp, the insulation will decrease, resulting in the risk of short circuit.
4. The optical fiber cable is deformed by moisture absorption, and the optical transmission loss increases.
5. The electrical connection points are oxidized, and poor contact faults increase.
6. Severe mold and insect infestation, polluting equipment.
For this, effective solutions are:
7. Choose optical fiber distribution box products with high waterproof level, and the waterproof index should reach at least IP55.
8. The box body adopts integral injection molding design to reduce seams.
9. The material of the sealing strip is durable and weather-resistant to prevent aging and falling off.
10. Watertight design of cable inlet and outlet.
11. Install exhaust holes to release internal temperature and humidity.
12. Add heating and dehumidification system when necessary.
Only by ensuring that the optical fiber distribution box has reliable waterproof performance can it avoid various damages caused by humid environments and ensure its stability and reliability when used outdoors.
Poor heat dissipation — There will be a certain amount of heat in the fiber distribution box, and improper heat dissipation design will also affect the performance of the equipment in the box.
1. High-density connectors and adapters heat up during operation.
2. The built-in optical module and main control board generate heat during operation.
3. The box is airtight, and internal heat accumulates.
If the heat dissipation design is improper, it will bring the following adverse effects:
4. The working temperature of the equipment is too high, and the service life is shortened.
5. The wavelength of the laser drifts, and the transmission performance decreases.
6. The sensitivity of the receiver is reduced, and the bit error rate is increased.
7. The timing of the circuit changes and the work is unstable.
8. Severe condensation will affect the performance of optical components.
9. High heat generation and increased energy consumption.
To improve cooling performance, you can start from these aspects:
10. Choose chassis materials with good thermal conductivity.
11. Increase the heat sink area to improve heat dissipation efficiency.
12. Add fans or heat pipes for auxiliary cooling.
13. Optimize component layout, heat source isolation and distribution.
14. Increase the area of ventilation holes and adopt air duct guidance.
15. Pay attention to dustproof and waterproof at the same time.
Through the optimization of heat dissipation performance design, it can ensure that the sensitive components in the optical fiber distribution box work in the best state, and avoid failures caused by thermal problems.
Large footprint — The large optical fiber distribution box is relatively large and will occupy a certain amount of space in the equipment room.
For large-scale optical fiber distribution boxes, it is true that due to their large volume, they often need to occupy more space in the computer room. At the same time, the complex optical cable connection in the box also brings certain difficulties to maintenance.
Specifically, the large distribution box has the following problems:
1. It occupies a large area and is not suitable for the limited space in the computer room.
2. The large size increases the difficulty of lightning protection requirements and is not conducive to handling.
3. The internal cables are complicated, and it is difficult to identify the lines during maintenance.
4. It is troublesome to disassemble and assemble, and the maintenance efficiency is low.
5. It is difficult to dissipate heat inside the large box.
6. Increased deployment and maintenance costs.
To improve these problems, consider:
7. Use a compact high-density distribution box to reduce volume.
8. Modular and tray design, easy to assemble and disassemble.
9. The cables are clearly marked and the wiring is neat and uniform.
10. Adopt a modular design for easy management.
11. Provide complete wiring diagram information.
12. Optimize the internal layout to ensure ventilation and heat dissipation.
Reasonable selection of models and above measures can alleviate the troubles caused by large distribution boxes and facilitate deployment and use.
Inconvenient maintenance — The cable relationship in the optical fiber distribution box is complicated, and it is difficult to identify lines and disassemble during maintenance.
1. Optimize the internal cable layout, so that the optical cables are laid neatly in accordance with uniform specifications and avoid clutter.
2. Use different color conduits or cable ties for identification to quickly distinguish different lines.
3. Improve the optical cable marking system, each cable needs to have a clear marking label.
4. Make an accurate internal wiring diagram of the distribution box, and mark the terminal connection of each optical cable.
5. Modular design is adopted to facilitate quick replacement of key components.
6. The internal space is designed reasonably to ensure the hand contact space during disassembly and assembly.
7. Provide necessary professional maintenance tools, such as cable measuring instrument, end face inspection instrument, etc.
8. Regularly check the cable connection, and quickly deal with any faults.
9. Establish a sound maintenance record system.
10. Strengthen the professional training of maintenance personnel to improve operating efficiency.
Through the above comprehensive measures, the maintenance difficulty of the optical fiber distribution box can be greatly reduced, making troubleshooting and repairing more efficient. This is critical to ensure the stable operation of the network.