The network cables come in different lengths with connectors at both ends. The extension of the type number indicates the length of the cable. The LBB 4416/00 comes without connectors. The connectors (LBB 4417/00) are available for it separately.Functions LBB 4416 /01 /02 /05 /10 /20 /50 These are special cables with two plastic fibers for data communication and two copper cores for the power supply. The cables all have the network connectors fitted. They connect the network controller to power amplifiers, audio expanders, call stations etc.