1665 Data Multiplexer

The Nokia 1665 Data Multiplexer (DM) is a compact, yet highly-scalable Ethernet/SAN/SONET platform that bridges the bandwidth gap between LANs and core backbone networks. The 1665 DM enables multiservice growth from traditional voice/private line services to Ethernet/SAN services while improving data networking efficiency.

The 1665 DM is engineered to help you bring new services to market faster and more cost-effectively than ever before. It offers a highly scalable switch fabric that can grow from 2.5G to 10G and in-service capacity upgrades.

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The 1665 DM is part of the comprehensive optical portfolio, providing end-to-end optical solutions for today’s metro and long-haul networks.

  • Offers seamless migration from TDM to packet networks enabling growth to a more diverse portfolio of services
  • Provides seamless end-to-end optical integration and inter-working capabilities with Nokia and other vendor systems
  • Combines the trusted reliability of SONET protection for all services plus rapid spanning tree and resilient package ring (RPR) protection for data services
  • Adds SAN transport and RPR switching to existing Ethernet/SONET hybrid capabilities
  • Offers increased revenue-generating potential by integrating GbE, Fast Ethernet, virtual LAN, and SAN networking capabilities into existing SONET-based solutions and services
  • Enhances the SONET layer by introducing Ethernet and SAN into the wide area network (WAN)/metropolitan area network (MAN)


The 1665 DM offers SONET, Ethernet, and SAN functionality on a single compact platform in support of new services.

Migrate seamlessly from TDM to packet networks

  • Flexible bandwidth granularity and service scalability when interconnected with routers and data switches
  • Hybrid Ethernet/SAN over SONET functionality allows enhanced data networking efficiency over legacy SONET base
  • Wideband, broadband and optical service interfaces

Increase revenue and operation cost saving potential

  • High-speed 10/100 Mbps and GbE data service interfaces with VCAT, LCAS, and CIR and PIR rate shaping options
  • Increase the efficiency of data and storage transport
  • 20 Amp shelf option provides power savings opportunities

Extend service life of existing SONET network

  • Combines SONET, Ethernet, and SAN functionality in a single platform and helps simplify metro point of presence (POP) router handoff
  • Grows metro access networks without forklift equipment upgrades
  • Utilizes standards-compliant designs to help preserve existing network investments
  • Features interface packs with backplane connectors to help provide the hardware with higher protection against accidental damage



1665 DM