132 Chapter 5
Since these standards were created, their capabilities and benefits have been accepted
and adopted by carriers and standards organizations around the globe.
These technologies have combined to create a whole new service market, the Mid-
Band Ethernet market, that is poised to become the dominant access method for business
and residential services. Mid-Band Ethernet services offer carriers a simple and
natural way to extend their core and metro MPLS/Ethernet networks all the way to the
customer, without the complexity and cost of TDM or ATM infrastructures.
Mid-Band Ethernet is revolutionizing and expanding the copper access network. For
those carriers offering Ethernet services over optical or SONET/SDH infrastructures,
Mid-Band Ethernet technologies make Ethernet services available to the vast majority
of customers that do not have access to fiber. Instead of Ethernet services being limited
by fiber availability to less than 10 percent of potential business sites and even fewer
residential customers, these services are now available to almost any subscriber location.
With distance potential beyond 20 Kft (6 km), 2BASE-TL can reach almost any
subscriber, providing a universal multi-megabit on-ramp to any metro Ethernet network.
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