Sunday, April 3, 2005

Fujitsu Enhances its FLASHWAVE 7500 ROADM

Fujitsu Network Communications released several major enhancements to its FLASHWAVE 7500 Reconfigurable Optical Add/Drop Multiplexer (ROADM), including a Wavelength Selective Switch (WSS) optical switch fabric, full 40-channel C-band tunable narrowband optics, Small Form-factor Pluggable (SFP) interfaces, multiport and multirate SONET Flexponder interface cards, and an intelligent control plane.

The new WSS-based optical core of the FLASHWAVE 7500 ROADM delivers advanced wavelength routing and topology migration capabilities, enabling the platform to meet rapidly changing service and traffic patterns by allowing any wavelength (and any number of wavelengths) to be added, dropped or optically passed through at any network node. WSS technology allows multiple DWDM rings to be terminated in a single FLASHWAVE 7500 multi-degree hub node and supports traffic grooming across multiple networks.

Fujitsu said optical hubbing of multiple DWDM networks results in substantial cost savings by eliminating unnecessary intermediate transponders; and substantial operational savings at aggregation sites by eliminating manual, per-wavelength fiber interconnections that often result in trouble tickets on other DWDM systems.

WSS technology also exhibits a lower power loss than other optical switch technologies, which enables larger network sizes and support for additional optical nodes per network. Lower optical power loss reduces the need for costly regenerators in longer spans, which can result in a capital savings of up to 50% per network over previous-generation solutions.

By using SFP interfaces and full C-band tunable narrowband optics, a minimal number of multi-function transponder types are needed to support a wide array of SONET, SDH, Ethernet, storage and video services from 100 Mbps to 10 Gbps. Muxponders enable multiple OC-48 or Gigabit Ethernet connections to be multiplexed onto a single wavelength at 10 Gbps. New Fujitsu Flexponder interface cards converge the functionality of a SONET ADM with DWDM, with full support for protection, traffic grooming and Performance Monitoring (PM) features.

The FLASHWAVE 7500 ROADM platform is 40 Gbps-ready. No amplifier or network changes will be required when 40 Gbps interfaces are added in the future.

Remote software provisioning and patented self-tuning amplifiers in the FLASHWAVE 7500 ROADM enable rapid service activation and eliminate manual adjustments at every site for the addition/removal of new lightpaths.

The FLASHWAVE 7500 ROADM leverages standards-based intelligent control plane protocols to perform automatic network topology discovery and end-to-end lightpath circuit tracking and identification, which helps field technicians see and troubleshoot equipment or lightpath issues. The FLASHWAVE 7500 ROADM also functions as a unified operations gateway for the subtending SONET/MSPP network, allowing dozens of SONET, MSPP and ROADM nodes to be managed from a single point.

Fujitsu is also launching a new NETSMART 2000 network planning tool to assist customers with network design and planning with the FLASHWAVE 7500 ROADM. Customers can design a variety of network topologies and predict system performance under different traffic scenarios. Network planners can also share network designs with each other as well as track changes and fine-tune any design, reducing time-to-market in strategic design processes, and increasing equipment usage and network design productivity.

  • Fujitsu Network Communications has attained over 75% market share for Reconfigurable Optical Add/Drop Multiplexers (ROADMs), according to figures from RHK.

Offer Massive Scalability for VOD Transport Networks

The higher capacity and lower cost of GigE ports, combined with the wide
availability of Layer 2 Ethernet switches and Layer 3 routers to perform
IP switching and aggregation functions have made IP the leading protocol
for VOD networks, which is a major change for most cable networks. The key
to the success of any VOD service is cost effective transport of hundreds
to thousands of VOD streams over the core network. As the popularity of
VOD services grows, the number of VOD output streams could become very


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