| The access network, often referred as "the last mile" of the Internet, plays an important role in the overall network. The increasing demand for more bandwidth requires new transmitting media of better transportation quality. Because of its competitive properties fiber comes to be the top choice and becomes the major form of networking. But, in the past, twisted-pair cable had long been the major form of accessing Internet in China, owing to its affordability. Fast Ethernet optical & electronic media converters, which can update the network while being compatible with existing copper cable resources, therefore become popular in the market today.In this paper, a kind of single /multiple mode Fast Ethernet optical & electronic media converter IST-100M-S/M is successfully developed. Because of its features of abundant bandwidth, high stability and reliability, and low cost, the product satisfies the market requirement of domestic Internet access, and has shown good marketing performance. IST-100M-S/M consists of a module and a hull. The technological characteristics of the former are:4-layer printed circuit board, which proposes good Electro Magnetic Compatibility, electrical trait and heat elimination;Full/half duplex auto-negotiation support;With status LEDs for malfunction indication and troubleshooting;Supporting insert & pull when electrified;Good compatibility.The hull, powered by a communication dedicated power supply, has good Electro Magnetic Compatibility, and heat elimination.IST-100M-S/M has been deployed in various broadband applications, will be used in backbone networks of ring or daisy-chain topologies.The experience of the experts and the author in debugging and testing are also concluded. |
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