The Inner Range Fibre Modem provides two separate, optically isolated ports to the Concept system LAN. A set of Fibre Modems are ideal for applications where modules in a Concept system are in different buildings and/or are separated by large distances. The modems have two fibre ports which enable sets of Fibre Modems to be arranged in branch or loop configurations. Each fibre port utilises a pair of fibres per link to provide full-duplex communication. Up to 5 Fibre Modems can be connected in series. Both Single Mode and Multimode versions of the Fibre Modem are available.