Creation of a broadband network based on gpon technology qualification work of bachelor

CONCLUSION
At the moment, PON technology is the most advanced in the world. Let's note its main advantages:
-Save fiber. Up to 128 subscribers per fiber, network length up to 60 km
-Efficient use of optical fiber bandwidth;
-Up to 2,488 Gbps downlink and 1,244 Gbpsс uplink speeds;
-Reliability. The intermediate nodes of the tree contain only passive optical splitters that do not require maintenance;
- The tree structure of the access network makes it possible to connect new subscribers in the most economical way;
-Ability to reserve both all and individual subscribers ;
-Flexibility. Using an ATM as a transport allows you to provide subscribers with exactly the level of service they need;
-Data is transmitted over the network as ATM cells ;
-Symmetric and asymmetric operation modes are possible;
All these features push this technology far ahead in terms of speed and throughput, which easily varies to a significantly high level. But a significant disadvantage of this method is the price of terminal equipment, a set of which costs an average of 5-7 thousand rubles. On the other hand, having spent their money once, the subscriber gets huge opportunities for relatively inexpensive access to modern world data resources.

The Diploma work discusses the organization of broadband access and draws the following conclusions:
-Broadband access on copper-core communication cables using ADSL2+ technology is less expensivethan other technologies, but has a relatively low quality;
-FTTB technology allows you to get high data transfer rates, but its use is limited to the maximum length of the subscriber line equal to 100m;
-FTTH passive access technology (PON) solves the speed of transmitted information, is easy to use, but today its use is limited by the cost of terminal equipment;
-The research carried out makes it possible to correctly build broadband access networks at the design stage, taking into account customer requests;

4.Safety life activities

The microclimate of the manufacturing facility has a great impact on the staff. Advice on the avoidance of some of the dimensions of microclimate reduces the maintenance of the workplace, can aggravate the employee's feelings and can lead to occupational diseases. Air temperature. Low temperature causes colds and colds. At high temperatures, the organism is intoxicated, it sweats very much, and the health of the worker becomes weaker. Worker attention can be frustrating and may cause accidents. Air absorption envelops moisture from the skin and the upper part of the nozzle and ultimately leads to the formation of thermoregulation of the body, deterioration of human condition, and weakness in the workplace. Low moisture (<20%) - visibility of the upper respiratory tract is considered. The speed of the air movement. Humans and k = 0.15 m / s will begin to sense the air movement. The air movement is connected to its temperature. Effects on the 360 ​​h smoker can cause negative, negative effects in the 400 C.
Microclimatic indicators
The microclimate is estimated at a height of 2 m from the permanent or temporary location of the workers in the area. The most favorable conditions are the microclimate sizes of the body which provide the normal state of the organism without the intensification of thermoregulation mechanisms and affect the long and regular human. They create conditions for a high level of competence and provide a warmth and comfort sensitivity. Mechanisms of thermoregulation in prolonged long-term exposure to human life are the climatic conditions of the microclimate, which will immediately undergo the normalization of the organism in the heat state.
Select a room
The room is spacious, air-conditioned, and air-conditioned. Bright sunlight is adversely affecting the monitor. In the dark room, lighting is not the only reason for the workplace. Position the stand so that the window mirror is not in front of you. If this is not possible, then buy a thick curtain or paint, so that the light coming from the window will not stop you. If the window is on the side, then the curtain or face will be switched on. Dust and heat not only cause harm to your health, it also affects the technique, so it is desirable to set the air conditioner in the room.