The Cisco ONS 15800 is based on a modular design that easily scales from 1 to 64 channels. By using common modules throughout the system, operators can minimize sparing costs. This common platform accommodates tributaries of OC-12/STM-4, OC-48/STM-16, and CISCO1803W-AG-E/K9. Multiplexed wavelengths can be transmitted up to 500 km through the use of distributed optical amplifiers along the optical route. Line extender modules (LEM) are used to regenerate the optical signal when necessary, thereby eliminating the need for intermediate SONET (SDH) electrical regenerators, consequently saving operators large sums of additional capital expenditures. Integrated, non-intrusive B1 and Bit Error Rate (BER) monitoring are available to assure high QoS levels and to allow for constant system monitoring of it's integral components. By using its multi-band architecture, special system design features can be used such as mid-band, distributed dispersion compensation. This compensation allows for tighter management of optical fiber non-linear effects, which can limit a system's capability. Other design parameters such as gain tilt adaptation, system application separation, and add/drop anomalies can all be addressed effectively, efficiently, and with little to no service disruptions. The system also features an optical service channel that provides the medium through which many of the vital system parameters are transmitted to the optional, element management system. It also features a local craft interface that is useful for maintenance.
The flexible ONS 15800 adapts well to different network architectures such as point-to-point, mesh, star, and ring.
Figure 1: Cisco ONS 15800 Platform
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