At present, the light back into the copper has become a worldwide trend in the construction of the access network. Based on PON Technology The FTTx access networks not only need to carry higher bandwidth services, also carries the telecom operators to achieve fixed in the HD era of great renaissance ideal. In the network integration, business integration trend, FTTx network from the structure, performance, business hosting, operation and maintenance and so has the revolutionary technological innovation to meet the operational building "unified, future-oriented automation" green access network demands. Carrying capacity of multi-service With the operators restructuring, China's three major carriers have implemented the whole business, and access networks as a basis for carrying the network needs to carry voice, data, video and even mobile base station backhaul and other services. Complex historical reasons, the traditional access network formed "a kind of access network, bu ilding a business" and "chimney" network structure, which greatly increases the operator's network construction costs and operating costs, while the introduction of optical access network, The "high-capacity, high access bandwidth, multi-service QoS levels to support capacity" of the characteristics of the decision of the access network to reunification, integration, and efficient direction of the evolution of host platform has become a realistic possibility. Personal access, FTTx offer ultra-high-bandwidth HD video experience, but also to meet Enterprise The user's high quality of service protection, high reliability and high security requirements of the line carrier services for mobile base station backhaul business, FTTx can provide high-precision clock transmission, high reliability access requirements. Large capacity, wide coverage Simplified network layer, flat network, access network nodes is the most significant is doing great. Current "high-capacity, small Board" me ans the construction of the access network has become the mainstream way. "Large capacity, small Board" means the number of users increased OLT coverage, corresponding to the OLT system capacity, backplane bandwidth, port density, coverage distance, this paper puts forward new requirements, industry has emerged in the current exchange capacity 960G, 40G bus, veneer 8 PON port, multi-60KM 10G uplink ports and high-capacity long-distance OLT PON technology equipment. Many scenes access Order to improve the higher rate to the user access to services to meet the future broadband Market And all business needs of market competition, light construction of Copper's FTTx access network model has become the mainstream of development patterns. Fiber "into" where the best is a very complex issue, to consider the user's bandwidth requirements, the existing access medium, the choice of access points, room, power supply, operation and maintenance, regulatory Policy And many other factors, therefore, operators need an integrated, full-scene access to FTTxSolutions Can not only meet the CO, FTTC, FTTB, FTTH, FTTO, FTTM needs, but also provide copper, P2P, P2MP access. High reliability With OLT capacity increases, the number of users increased coverage, but also hosts a business such as business access and mobile bearing, reliability requirements for FTTx networks become more sophisticated and PON equipment for their needs OLT devices provide an important component (such as Power supply Board, control board, the uplink interface board or even the user interface board redundancy protection), while network protection for important clients or key business, OLT provides lines of TypeB, C protection, and the upstream network level protection, in order to avoid single point of failure, to achieve reliable access. Through the plates, line and end the three levels of network redundancy protection solutions, you can achieve business failure within 50ms switching to provi de users with always-on business experience of high reliability. Automated deployment, operation and maintenance With the "Light of Copper" in advance, more and more close to the users remote access node, the number of nodes into a number of times, times of growth, the scene varied, more types of equipment, so equipment opening, configure, upgrade complex; while the remote device out of the room, equipment operation Environment Poor, increasing failure rate; equipment widely distributed, fault-site processing volume. Address these issues, traditional access equipment can not meet the needs of FTTx network deployment and operation and maintenance requirements, and only realized the remote device's Plug and Play and the Measurement of free, automatic payment services, equipment, remote automatic updates, automatic fault diagnostics, configuration data is automatically configured and a series of automated deployment and operation and maintenance functions, to make large-scale d eployment of FTTx networks possible. Green Relationship between energy conservation and social sustainable development to become a hot topic of green building sustainable development of broadband networks has also become carriers of the important social responsibility and an important way to increase profitability. Light of Copper, copper is replaced with optical fiber itself is energy saving programs, in addition, the network needs in all aspects of green design, to build a green end to end network. Spoke in front of a large-capacity optical fiber, long distance communication advantages also need to OLT can be achieved with large capacity, the industry standard maximum capacity of OLT reached T-bit, single-frame maximum support 1 million users, large capacity means the OLT can step into the engine room, the advantage with long-distance optical fiber can reduce the large number of nodes in the real engine room, thus making room rental costs, and significantly lower overall p ower consumption; At the same time is out of the vehicles to the site, which requires maintenance work will be concentrated in the central room in the completed, eliminating the need for movement of personnel, the trouble, and save the resulting energy consumption. Domestic FTTB mode will be one of the mainstream building, FTTB promotion makes the access node further close to the end user, so that the communication equipment will also be more of them in the corridor communities. Corridor applications as close to residents, usually not a good heat dissipation. The communications equipment is usually greater than the heat dissipation, in order to effectively heat, usually with a large leaf fan. However, the operation of a large fan page will have constant noise pollution, affect the normal life of residents. In addition, consultation showed corridor equipment damage caused by the fan device 20% chance of repair. Little trouble to bring a big problem, send, out of the bus, rewo rk are necessary for the community resource consumption. Currently there for corridor applications are fanless design equipment. The benefits of fanless design is the first direct elimination of the noise pollution; Secondly, the fan directly to avoid damage to equipment caused by the repair caused by a series of problems; there is the saving power. To each device two fans, each fan average power 5W, if the whole network to use 100 000, fanless design which is only a year the whole network will be able to
access point vs router
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