Cisco 4-to-12 Degree - Contentionless Add/Drop Unit - Multiplexor - 16 Ports - Plug-in Module - NCS2K-16-AD-CCOFS

Contentionless Contentionless add/drop refers to the ability of an N-degree ROADM node to accommodate N wavelengths of the same frequency from a single add/drop device. Colorless Colorless ROADM ports are not frequency-specific. This characteristic simplifies provisioning and allows dynamic restoration, because the frequency of an ingress channel can be retuned by software without requiring its fiber to be relocated. Omnidirectional Omnidirectional ROADM ports are not associated with a specific ROADM degree. Therefore, a wavelength reroute does not require a physical fiber move, and it can be executed entirely by software. Flex spectrum The amount of spectrum allocated to a wavelength can be flexibly provisioned to allow for multicarrier super channels or single wavelengths exceeding today's 50-GHz channel spacing. Single-slot form factor Reduces footprint and simplifies cabling for the add/drop stage of a ROADM node. Support for up to 16 degrees Allows highly scalable mesh nodes, with no blocking of add/drop wavelengths within the add/drop structure. The NCS 2000 contentionless add/drop line cards provide colorless, contentionless, omnidirectional, and flex spectrum add/drop functionality to the Cisco nLight ROADM architecture.