The next generation of optical metro access and transport platforms offer service providers a unique opportunity to leverage existing SONET/SDH infrastructures while meeting existing and emerging requirements for aggregated voice and data services. Additionally, these devices offer a means for service providers to prepare their optical network infrastructures to deliver the e-business and application-centric transmission facilities that their customers will require in an increasingly competitive global economy.

In summary, these devices enable the following:

• a cost-effective means of delivering multiple Layer-1 (DS0 to DS3, Ethernet, xDSL, OC–x), Layer-2 (ATM, frame relay, private line), and Layer-3 (IP routing, multiprotocol labeling system [MPLS], DiffServ) services from a high-density, small-footprint, integrated hardware platform
• a more efficient method of transporting data traffic on SONET/SDH transmission facilities versus traditional ADM TDM–based multiplexers
• interoperability and optimization of existing SONET/SDH network infrastructures
• an integrated platform for provisioning, management, and billing of voice and data access services

In a highly competitive telecommunications environment, next-generation optical metro access technologies will enable service providers to limit capital investment while leveraging existing optical assets more efficiently. The result will be the ability to deliver voice and next-generation services more cost effectively and efficiently. Optical metro access is a linchpin technology for service providers focused on delivering competitive voice and data access services today and tomorrow.