Wiltel Communications, now part of Level 3 is another U. S. provider that has elected
to use the IEEE 802.17 standard as a way to construct their next generation converged
transport network. Its integrated fiber-optic network provides local-to-global connectivity
that links more than 100 cities in the U. S. and reaches five continents. WilTel
is also the preferred provider of nationwide long-distance voice and data services for
ATT. In addition, it has relationships with more than 40 non-RBOC carriers that add
an additional 12,000 off-net locations.
370 Chapter 12
Wiltel built a series of RPR based rings for Multiservice transport platform for the
following reasons among others.
?– Two network elements are consolidated into one. WDM and ADM network elements
were eliminated. In their place the 10 Gbps packet rings provides more bandwidth
with ?? the number of devices so they can generate more revenue and reduce costs
simultaneously. However, when traffic exceeds the 10 Gbps ring capacity, WDM
is still planned as Layer1 transport to scale past 10 Gbps.
?– Willtel can sell TDM or Data service interchangeably. The reduction of complexity
of equipment and provisioning required to create a new service was important.
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