Comparison of EPON and ADSL

ADSL After several years of vigorous development has become China's most popular fixed-line operators in broadband access means. ADSL using traditional copper broadband data transmission resources, make full use of the fixed-line operator's copper resources, China Telecom and China Netcom such operators, the early development of broadband access is one of the best choices.

ADSL/ADSL2 + Business is an asymmetrical transmission of broadband access technologies, the uplink bandwidth is limited, less than 1M, downstream bandwidth up to 26Mbps, the actual business of covering no more than 3km distance, generally offer 512Kbps to 2Mbps downstream bandwidth, the main application the public Internet.

However, with a variety of new businesses, especially the rise of video services, the user's bandwidth requirements are increasing. With the long, online games, instant messaging, broadband telephony, video telephony, personal photo album sharing applications such as the rapid growth of users of the upstream bandwidth demand is also growing.

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China Telecom and China Netcom broadband network in the planning of their future bi-directional bandwidth of individual users will reach 10M-20M. ADSL bandwidth strictly limited by the transmission in distance, the higher the bandwidth achieved only over short distances, even after the "Light of Copper" reform, reducing the coverage of ADSL, which is only in a certain period of time, to a certain extent bandwidth requirements.

Based on fiber access networks, the bandwidth is theoretically unlimited extension. So with the EPON technology matures, its high bandwidth, long distance coverage, making EPON technology replacing ADSL technology will become the inevitable choice.

Relative ADSL, EPON at relatively high initial construction expenditures, including pre-laying equipment costs and fiber costs. However, due to that network uses passive optical network technology, fiber-based PON technology in the operation and maintenance of the costs to be much lower than ADSL and copper wire.

By the late operation and maintenance cost is reduced, provide higher bandwidth and more long-distance business coverage, and the resulting ability to provide more new business, bring more revenue, can be relatively offset on the cost of equipment and wiring. The fiber cost is already very low, FTTx has entered a golden period of development, the cost of equipment will also continue to reduce in the building.

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Thus, through the deployment of EPON carriers can be enhanced, including broadband access, including comprehensive business competitiveness, thereby stabilizing the user resources, and even brought the loss of the user's back, it will be for operators to bring more revenue, enabling operators to long-term benefit.

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