U.S. Fiber Markets

This chart summarizes the Total Available Market estimates in the analysis that we have published titled Opportunities for New Data Architectures in U.S. Incumbent Service Provider Networks, published in September 2002. 

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All four of these technologies are limited by the availability of spare fibers. If there are no spare fibers at a network node, it is not possible to deploy new fiber-based architectures. In addition Gigabit Ethernet and Resilient Packet Rings (RPR) have topological restrictions that place further restrictions. RPR, in particular, requires enough fiber to support a ring, which is not that common in the access network.