Given the relatively low-fiber penetration in the market (around 10 percent), and the
tremendous cost to trench fiber to a customer (as much as $100,000 per mile of fiber),
it is clear that fiber cannot and will not be economically deployed to a significant portion
of the population for many years to come. The Mid-Band Ethernet technologies are
capable of extending and complementing fiber builds so as many customers as possible
can quickly and economically access the Ethernet network.
Mid-Band Ethernet??™s Dynamic Rate Adaptation
Mid-Band Ethernet technologies differ from traditional Ethernet technologies in that
they are rate adaptive. One of the characteristics of xDSL technologies is that they run
faster on shorter lines and slower on longer lines. Additionally, they can adapt to the
length and quality of the line. The technology can basically determine the maximum rate
that can be supported on a given line and initialize at that rate. Traditional Ethernet,
such as 10/100BASE-T, has auto-negotiation features that can select a line rate based on
peers and line quality, but Mid-Band Ethernet technologies are much more flexible and
granular.
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