ONS 15801 platform

With the Cisco ONS 15800 and ONS 15801 platforms, Cisco offers a network solution that can scale with the rapid growth of the Internet while providing unrivaled reliability. The Cisco ONS 15800 uses Out-of-Band Forward Error Correction (OOBFEC) to yield a significant improvement in Optical Signal-to-Noise Ratio (OSNR) margins over a nonFEC solution. This is a substantial gain that service providers can apply toward additional channels, increased number of spans and span length, or a hybrid of both. Reducing the error rates of long-haul optical transport networks, service providers can establish QoS standards and sell tiered services to their customers. Performance monitoring is crucial to powering an error-free network and provides a standardized approach to address ongoing maintenance issues.

The introduction of the Infra Red (IR) band, also known as L band, allows the Cisco ONS 15800 to double the channel count. Tangible benefits of scaling the capacity of the Cisco ONS 15800 by adding the L band include:

• Capacity upgrades is non-traffic affecting
  
  
• There is no need for tighter channel spacing
  
  
• There is a better channel count on dispersion-shifted fiber
  
  

Service providers who have already exhausted the available C-band capacity or have fiber types that significantly limit capacity in the C band are those who benefit most from the addition of the L band.

The Cisco ONS 15801 DWDM ETSI Platform also provides optical channel protection, through the optical switching unit (OSU). The OSU implements the 1+1 optical protection at channel level in the DWDM system, protecting the client signal from failures within the optical transport domain. The OSU protects a generic client signal independent of the bit rate (622 Mbps, 2.5 Gbps, or 10 Gbps), format protocol, and wavelength (in the range 1300 to 1550 nm). Optical channel protection is particularly beneficial in networks that do not supply protection at client signal, like ATM switches, IP routers, and so on.

The flexible Cisco ONS 15800 and ONS 15801 platforms adapt well to different network architectures such as point-to-point, mesh, star, and ring. An open architecture allows the platforms to be building blocks of both legacy time-division multiplexing (TDM) voice networks and "greenfield" pure-IP networks. The main application is, of course, the long-haul network in the 600-km range, but the platform also provides an efficient solution for multilambda 10-Gbps interoffice transport in the metro core networks.

Key Benefits

The Cisco ONS 15800 and ONS 15801 platforms offer flexibility, scalability, and enhanced performance in an economical design. The Cisco ONS 15800 is built with future growth in mind. Benefits for the service provider include:

• Grow your system by adding modules or subracks for low startup costs
  
  
• Get system flexibility through its multiband architecture (Red and Blue in the C-band and L-band)
  
  
• Increase capacity and improve distance with superior OOBFEC
  
  
• Gain network flexibility with OADM capability at any site
  
  
• Install the platforms easily- because all equipment is pre-cabled in manufacturing
  
  
• Use local craft interface software on PCs
  
  
• Manage network with Cisco Transport Manager