Metro transport networks must support numerous service demands: transmission of low-rate 10/100BASE-T and OC-3/STM-1 signals; higher-rate OC-12/STM-4, Gigabit Ethernet, OC-48/STM-16 signals; video signals such as standard-definition Serial Data Input (SDI) and high-definition SDI (HD-SDI); optical-transport-unit-1 (OTU-1) services; and first-generation (1G), 2G, 4G, and 8G Fibre Channel services. The flexibility to support multiple rates and aggregate them over a dense wavelength-division multiplexing (DWDM) interface using OTN technology brings huge savings in operating and management costs.
Cisco NCS 2000 Flex Spectrum Single Module ROADM line cards create an agile DWDM layer forming the foundation for converged transport architectures, delivering features that allow programmability and agility in provisioning and recovery operations. Wavelength add/drop and routing are entirely software-driven, which eliminates manual operations, helps decrease operating expenses (OpEx), and reduces provisioning and recovery times.
The Cisco ONS 15454 OC-192/STM-64 XFP-based optics card provides a single XFP-based pluggable optics module. The multiple-rate optics card operates in either Cisco ONS 15454 SONET or SDH systems, providing multiple-reach capabilities including short-reach/inter-office (SR/IO), intermediate-reach/short-haul (IR/SH), and long-reach/long-haul (LR/LH). Additionally, the SR/IO-only card provides a cost-effective, fixed SR/IO configuration to support first cost-sensitive installations where flexibility is not paramount.
The Cisco ONS 15454 OC-192/STM-64 XFP-Based Optics Card provides a single XFP-based pluggable optics module. The multiple-rate optics card operates in either Cisco ONS 15454 SONET or SDH systems, providing multiple-reach capabilities including short-reach/inter-office (SR/IO), intermediate-reach/short-haul (IR/SH), and long-reach/long-haul (LR/LH). Additionally, the SR/IO-only card provides a cost-effective, fixed SR/IO configuration to support first cost-sensitive installations where flexibility is not paramount.
The DCU assembly provides compensation for accumulated chromatic dispersion effect in line and terminal sites of optical telecommunications systems. It provides a flexible solution to the problem of accumulated chromatic dispersion without having to drop and regenerate the wavelengths on the link, which would otherwise be necessary when accumulated chromatic dispersion exceeds the maximum allowed dispersion tolerance.
