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The rising demand for mobile data services enabled by High-Speed Downlink Packet Access (HSDPA) is driving a dramatic increase in backhaul bandwidth requirements, from 2-6 Mbps per cell site to 20 Mbps and beyond. However, given the price-sensitive nature of these services in addition to voice pricing pressures, revenue increases for mobile operators are expected to be modest. The key to maintaining margins and profitability is to leverage the availability of low-cost transmission technologies, such as Ethernet and Digital Subscriber Line (DSL), while introducing statistical gain as a technique to reduce bandwidth requirements from aggregation points in the Radio Access Network (RAN).
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