OTN (optical transport network) is an optical network protocol that efficiently deals with network traffic demands by mapping storage, video, voice, and other types of protocols at different rates into the same 10G (OTU2), 100G (OTU4), 200G (OTUC2), or 400G (OTUC4) uplink. This provides simpler high bandwidth capabilities at a comparatively low cost. OTN relies on ITU-T G.709 standard to transparently encapsulate client signals and provide faster troubleshooting and monitoring capabilities for high SLA. OTN includes the additional benefit of forward error correction (FEC) which enables transport over longer distances with less regeneration sites.
