Monday, June 14, 2010

NSN Adds MPLS-TP Packet Capabilities to hiT 7300 DWDM

Nokia Siemens Networks has added a packet optical transport solution (P-OTS) capability to its hiT 7300 DWDM platform. Integrating packet data handling the its optical transport platform enables traffic to move more efficiently through an operator's network, rather than needing to be processed by routers at each stage.

NSN said its next-generation P-OTS is achieved through the integration of Multilayer Protocol Label Switching -- Transport Profile (MPLS-TP) functionality and protocol-agnostic switching that allows the hiT 7300 DWDM platform to handle both packet- and circuit-switched traffic with the same efficiency. It combines the scalability of photonic switching with the flexibility of electrical switching capacity from 1.5Tbps to 24Tbps. In addition, the integrated Optical Data Unit (ODU) cross-connect functionality aggregates low-speed traffic and efficiently fills high capacity transport channels which means the installed optical network can handle more traffic.

"With internet traffic growing fast and average revenues per subscriber declining, cost per bit is the most pressing issue for service providers," said Uwe Fischer, head of Optical Networks Product Management at Nokia Siemens Networks. "This combination of MPLS-TP and optical technology allows the most cost-efficient transport of data traffic over a DWDM optical transport network. We allow service providers to implement a flexible transport architecture with the agility and scalability necessary to meet the dynamic requirements of their subscribers."

  • In March 2010, Nokia Siemens Networks unveiled its hiT 7300 coherent 40G transponder for integration into the hiT 7300 DWDM platform, which has been deployed for more than 80 customers worldwide. The company said its hiT 7300 coherent 40G transponder platform is easier to install than existing systems because it does not require the costly and time-consuming fiber measurement. In new deployments, operators can avoid even the need for dispersion compensating modules, leading to low-latency connections, simplified amplifier design and overall reductions in deployment costs and footprint.

  • In addition, the Nokia Siemens Networks transponder supports 40G transmission over older fiber -- dating back to the 1990s and earlier -- unlike existing systems. It utilizes the installed network infrastructure, thereby protecting the operator's investments by using" coherent transmission" technology, in particular a modulation format called CP-QPSK (coherent polarization multiplexed quadrature phase shift keying).

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