Manufacture & Export of L2, Ring, Optical This product can transmit each 4, 8 ,16 Channels 10/100/1000Mbps Ethernet data through 2 Core optical cable, and can be composed as such various networks as Point To Point, Linear Add/Drop and Ring. It has built-in by-pass function to automatically detour when the power supply is in trouble. Having Ethernet input and output display LED on the transmission and receiving part, it shows the communication state visually with no other devices. The 16 Ethernet ports can be extended without HUB. Management (N.M.S) system provides Graphic User Interface(GUI) using LAN Interface, making it easy to maintain, repair and operate the system. HD-SDI, 1Core, Mix This product is a optical transmission equipment which converts HD-SDIsignals to optical signals and transmits 1 signal through 1Core optical cable. It is the method using optical characteristics, capable of no-relay long-distance transmission, and getting no influence from electric field and magnetic field. The resolution is 720p ~ 1080i(TV), and transmits high quality signals. An also as the C.W.D.M method using optical characteristics, it can transmit audio, data Ethernet signals 1Core optical cable. Import of SFP 1.25G Bi-direcitonal 2Core 20Km SFP Tranceiver 1.25G Bi-direcitonal 1Core SFP 20Km Tranceiver 1*9 SC Device SC Type, 1.25G Uni-direciotional 3.3V, 20Km SC Type, 1.25G Bi-direciotional 3.3V, 20Km SC Type, 155M Uni-direciotional 3.3V, 20Km SC Type, 155M Bi-direciotional 3.3V, 20Km