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With the continuous development of the communications industry and the increasingly fierce competition in the telecom operating environment, the importance of the safety of transmission networks and optical cable lines has become more and more important. As a service bearing platform, the transmission system has a major impact on the survivability of the entire network due to its protection and restoration. Therefore, how to improve the reliability of the transmission system is a key consideration in the construction of the transmission network. Among the factors that affect the reliability of the transmission system, the influence of the optical cable line is the largest. Almost all optical cables are laid in the wild. The network security is greatly affected by external factors, and the incidence of accidental failures is high. According to the statistics of the maintenance department, every year, China Unicom’s inter-provincial long-distance trunk optical cable lines have various failures hundreds of times, among which there are natural It is caused by disaster factors, and it is also caused by man-made damage or improper construction. In the past, dealing with these problems mainly relied on the on-site repair personnel to use OTDR to locate and replace them, or manual replacement in the computer room, but these methods required time ranging from half an hour to one hour, and would consume a lot of manpower and material resources. In this context, the OLP system came into being.
2. What is the OLP system?
OLP (Optical Fiber Line Auto Switch Protection Equipment)-optical fiber line automatic switching protection device. Optical fiber automatic switching protection system (abbreviated as OLP) is an automatic monitoring and protection system that is independent of the communication transmission system and is completely built on the physical link of the optical cable. As a transmission device working at the optical layer, OLP has the characteristics of independent and transparent transmission signals, safety and reliability, and fast failure recovery. It can help users build a non-blocking, highly reliable, safe, flexible, and disaster-resistant optical communication network. According to the protection principle of the line, it can be divided into two protection modes: 1+1 and 1:1. The senior engineers ofSharetop have designed optical fiber line protection schemes in a large number of transmission projects, and have rich experience and unique insights on optical fiber line protection issues.
3. How doesSharetop solve the problem of optical fiber line protection?
In order to balance the transmission needs of users and the protection needs of optical fiber lines,Sharetop introduced optical protection equipment mounted in a 1U chassis, which can be installed on a standard 19-inch rack. This OLP device is used for 1+1 fiber link backup. It can automatically switch to the backup optical path when the main optical path fails. The switching time of the whole process is ≤45ms, which does not affect the normal transmission of the business.
1U frame OLP optical protection equipment
At the same time, as a card-type optical fiber line protection device, XYT-OLP can also be loaded on a larger machine frame to complete the integrated transmission task with other functional equipment, and can complete the unified management of different functions through the network management board.
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