Optical cable line failure


As we all know, the optical cable is composed of several parts such as cable core, reinforcing steel wire, filler and sheath. In addition, there are waterproof layer, buffer layer, insulated metal wire and other components as needed. So, how to repair the fault of the optical cable line?


fiber optic line

1. Handling after failure

Different types of line faults have different priorities.

(1) There is a total resistance fault that can be replaced by an optical cable in the same route. The personnel on duty in the computer room should use other good fiber cores to block services on the optical fiber in accordance with the emergency plan as soon as possible, and then repair the faulty fiber as soon as possible.


(2) If there is no optical fiber that can be replaced by the total block fault, the emergency plan is implemented to replace the connection or the direct repair of the obstacle point. The principle of "first important circuit, second secondary circuit" should be followed during the first replacement or repair.


(3) The optical cable has non-total resistance, and there are remaining optical fibers available. Use spare fiber cores or other optical cables with the same route to replace the services on the faulty fiber cores. If there are many faulty cores, there are not enough spare cores, and there are no other optical cables with the same route, the secondary circuit can be sacrificed to replace the important circuit, and then the faulty core can be repaired by the method without interrupting the circuit.


(4) The optical cable is not fully resisted, and there is no remaining optical fiber or optical cable with the same route. If the blocked optical fiber opens an important circuit, use other non-important circuit optical fibers to replace the blocked optical fiber, and use the method of uninterrupted cutover to repair the faulty fiber core urgently.


(5) The transmission quality is unstable, and the system is good and bad. If there is a spare fiber core that can be replaced or other optical cables with the same route, the services on the optical fiber can be transferred to other optical fibers. Find out the cause of the degradation of transmission quality and deal with it in a targeted manner.


2. Fault location

If it is determined that the optical cable line is faulty, you should quickly determine which relay segment the fault occurred in and the specific situation of the fault, and ask the network management room in detail. According to the judgment result, immediately notify the relevant line maintenance unit to judge the fault point.


3. Preparation for emergency repair

After receiving the fault notification, the line maintenance unit should quickly load the repair tools, instruments and equipment, and at the same time notify the relevant maintenance line staff to find the cause and fault point in the nearby area. The preparation time for emergency repair of optical cable lines shall be carried out according to regulations.


4. Establish a communication system

After the repair personnel arrive at the fault point, they should immediately establish a communication system with the transmission room.


5. Organization and command of emergency repairs

The maintenance department shall be the business leader in the emergency repair of optical cable line failures. During the emergency repair period, we shall pay close attention to the emergency repair situation on site, and do a good job of cooperation. The emergency repair site shall be commanded by the leader of the optical cable line maintenance unit.


While testing the fault point, the emergency repair site should designate a special person (usually an optical cable operator) to organize the excavation personnel to stand by, and arrange the logistics service work.


6. Emergency repair of optical cable lines

When the fault point is found, emergency optical cable or other emergency measures should be used. Observe and analyze the situation on site, make records, take pictures, and report to the public security organs.


7. Business recovery

After the on-site optical cable repair is completed, the computer room should be notified in time for testing, and communication should be resumed as soon as possible after verification is available.


8. On-site treatment after emergency repair

After the repair work is over, inventory tools and equipment, sort out test data, fill in relevant registrations, deal with the site, and stay behind a certain number of people to protect the site.


9. Line data update

After the repair work is completed, organize the test data, fill in the relevant forms, update the line information in time, summarize the emergency repair situation, and report to the higher authorities.


The above is the whole content of how to repair the fault of the optical cable line. Of course, in addition to knowing how to repair the optical cable line, we also need to understand a lot of optical cable knowledge, such as optical cable laying and selection of optical cables.


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