The CL-OTN-3900-04 OTN-WDM subsystem embodies the philosophy of "Maximum Density, Full-service Support, Zero Compromise", converging optical and data technologies to deliver end-to-end 400G solutions for 5G fronthaul, cloud-network convergence, and mission-critical networks. To enable 400G LH transmission, three 400G OTN technologies have emerged: single-carrier, dual-carrier, and quad-carrier. They vary based on the number of wavelengths used. Understanding them is crucial for current network architectures. As networks handle more complex workloads, adopting 400G OTN. The Cisco 8000 series routers utilize Cisco's Silicon One ASIC to deliver full routing functionality at higher capacities and a lower environmental footprint than any other routing silicon available. VIAVI provides advanced test products for the lab and field to help the 400G ecosystem address this critical challenge. Highly configurable, multi-protocol. CHANDLER, Ariz. – October 6, 2021 — Bandwidth growth, driven by the expansion of data centers and 5G network build-outs, is expected to drive the need for faster coherent Dense Wavelength Division Multiplexing (DWDM) pluggable optics. Consequently, Data Center Interconnect (DCI). The customer has two equipment rooms separated by 200km and requires an optical transmission system to carry 100G/200G/400G services between them.