The Future of SONET/SDH and DWDM
As telecommunication infrastructures continue to evolve, SONET/SDH and DWDM will continue to play a major role in the transport of high-bandwidth applications. The future bandwidth drivers include increased Internet and intranet usages, applications such as video on demand, online gaming, remote SANs, high-volume remote data backup, and integrated voice and video over fiber to the home (FTTH).
MSPPs will provide metro access, core, and long-haul transport. Many people believe that SONET/SDH and DWDM are competing technologies, because DWDM designs are trying to incorporate a subset of services that SONET/SDH currently provides. The reality is that DWDM and SONET are in some ways not competing, but complementary ...
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