Everything needs to be done. Only by grasping the theme, you are not worried about common sense problems. What Xiaobian wants to talk about today is that there are several key elements that must be followed in the FTTH project. As long as you understand these key elements, you will get twice the result with half the effort. Improve the speed of construction and reserve enough space for upgrading or expansion to effectively extend the space for sustainable operation and upgrade of the network. The elements to be followed in the FTTH project are as follows:
1. Location of the position of the splitter
In passive optical networks, the location of the splitter plays a crucial role in the implementation of the project. The splitter is a passive device that works without a power supply, so there are not many concerns in site selection and installation, just pay attention to the pipeline and user distribution. The location where the beam splitter is installed is generally not placed in the equipment room, and is usually selected in a light distribution box that is relatively close to the user and is densely populated by surrounding users. If the splitter is installed in the equipment room for centralized splitting, the advantages of PON are not reflected at all.
The correct location of the optical splitter installation location can bring the following advantages:
1) Optical cable investment from equipment room to fiber distribution box
The determination of a reasonable splitter location can greatly save investment in fiber optic cable. Take a 24-core cable as an example. If the splitter is installed in the equipment room, the 24-core cable is only used for the connection between the equipment room and the user distribution box. Only 24 users can be activated. However, if it is used in the central computer room and the outdoor splitter connection, 1536 households can be covered according to the split ratio of 1:64. In other words, if the installation is reasonable, you can replace a 1536-core cable with a 24-core cable.
2) Saving space in the computer room and improving management functions.
Installing the beam splitter outdoors can save space in the rack in the equipment room.
2, the location of the machine room
In a pure FTTH project, you may need up to one machine room. Because the construction of the computer room involves power taking, management, operation, backup power, air conditioning, etc., it will greatly increase construction costs and operating costs. Usually, the operator will not set up the FTTH room in any community unless the nearby computer room is too far away from the user. Currently, operators usually install optical distribution boxes or fiber optic cable connector boxes in the community at most.
3, concentrated spectroscopic
Operators typically perform concentrated splitting outdoors where they are close to the user. This is a kind of protection for investment, and the expansion of the optical splitter can be performed according to the situation of the user opening. In other words, when the number of users in the early stage is relatively small, you can buy a little light splitter. As the number of users is turned on, the number of splitters is gradually increased. However, it is recommended to consider sufficient expansion space when designing in the early stage.
4, reduce the type of fiber optic cable
In order to facilitate implementation and management, more than two types of fiber optic cables (excluding home-made cable) are not used in a well-designed passive optical network. This cable mainly refers to the central machine room to the user distribution box. In Rosenberg's project, up to two fiber optic cables can be used from the central computer room to the floor distribution box. Reducing the type of fiber optic cable will help to determine the length of the cable to be used, which will help manufacturers to provide quick response capability and competitive price.
5, easy to expand
At present, the split ratio of EPON or GPON can be 1:64. In other words, a PON of a central office device can have 64 users. According to the standards of 10G-EPON and 10G-GPON, the split ratio will reach 1:128. However, in the current implementation of the operator, the split ratio is not directly achieved in the project by 1:64, and the commonly used splitter is 1:32. Using a split ratio of 1:64 means that the average bandwidth per user of EPON can only reach 16M.
If users generally need to increase bandwidth, it will be stretched. According to the standard of high-definition digital television, to achieve 1080P-level program transmission on the network, the required conservative bandwidth is 22M. If the current universal configuration requires users to increase the bandwidth to 20M or 30M, the existing network will not be able to meet the needs. The active network equipment needs to be upgraded to the 10G network. The upgrade must result in the existing Waste of assets and huge reinvestment. Therefore, it is generally recommended to consider the user's 1:32 optical splitter, which can effectively extend the service life of the current network and provide customers with a better return on investment.
A good solution must be for a defined project, based on the needs of the developer and the owner, to develop a targeted program. A good solution is a network that is easy to implement, easy to maintain, easy to upgrade and expand, and fully increases the effective period of investment. The professional FTTX solution provider can provide users with professional pre-consultation and post-sales training guidance services. The customized service makes the overall project plan from design to implementation process so that customers have no after-care and maximize system value.
The key elements that the FTTH project must follow are the five above. The reader should consider these five factors when implementing the FTTH project to improve the quality of the project.
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