Business need
Cost-effectively aggregating and forwarding TDM and Ethernet services is essential for building converged networks that minimize operating costs and enable exciting new packet-based services. The ability to switch and route services automatically can lower the cost of bringing in multiple service types—such as SONET, SDH, OTN, Ethernet , storage and video—aggregated from the edges of regional and metro networks, and switching them to the appropriate destination. Network operators need flexible solutions to help scale their core and regional/metro networks to support new services, subscribers and revenue streams from the edge.Challenges
It is too expensive to deploy and maintain multiple ADMs, MSPPs and digital cross-connects, particularly as you scale your network. Forklift upgrades are out of the question, but you must find practical ways to lower OPEX and CAPEX while enabling new services and simplifying network operations, administration and provisioning.Solution
High-capacity multiservice optical switching systems, bundled with highly reliable software-based automation, lower networking costs by reducing expenditures and the complexity of equipment, space, power and network resources. In addition, once the software-based automation is incorporated, OPEX can be reduced by as much as 85 percent and network resources by 65 percent. With this multiservice functionality you can build a network that optimizes the use of bandwidth by converging TDM and Ethernet services over a variety of different interfaces and bandwidth rates.Ciena's offerings
The CoreDirector® Multiservice Optical Switch—the industry's most robust, fully automated, standards-based multiservice optical switching platform—facilitates TDM and Ethernet convergence while seamlessly integrating into your existing network. Even if you operate an existing switched-network infrastructure, a few CoreDirectors can help simplify your network, improve reliability and enable support for Ethernet, while still lowering costs.Benefits
- Build a single intelligent core network to support optical switching of TDM and Ethernet services from 10 Mb/s to 10 Gb/s
- Save over 60% on CAPEX and 85% on OPEX by deploying CoreDirector in full meshed configurations
- Reliability: CoreDirector has been successfully deployed in the world’s largest automated intelligent mesh optical network, and in dozens of the top service provider networks across the globe
- Streamline network operations, administration and provisioning by consolidating the functions of multiple network elements into a single, highly reliable platform that offers better than 99.9999% availability, while still being able to recover from catastrophic network failures in as little as 50 ms

