Exar's applications include OTN networks, PDH networks, High Order and Low Order SONET/SDH linear networks, ring networks and packet based access networks such as RPR. The Exar product line supports OTN, SONET/SDH, Ethernet, Fast Ethernet Gigabit Ethernet, 10 Gigabit Ethernet, DS3, E3, DS1, E1, Fiber Channel, FICON, ESCON, ASI and SDI video, GFP, LAPS, PPP, Virtual Concatenation (VCAT) of High Order and Low Order SONET/SDH paths, DS1/E1 and DS3/E3 PDH signals, and the Link Capacity Adjustment Scheme (LCAS). Exar products are ideal for CPE, CLE, routers, ROADMs, DWDM, ADMs, MSPPs, MSTPs, wireless backhaul, IP-DSLAMs and line cards. The following is a list of sample solutions, sample block diagrams, suggested devices and software.