Fiber optic multiplexer is the entry-level product in the Optimux family line. It transports four E1 channels over a fiber optic link. As an economical remote multiplexer, it reduces the cost per E1 link over fiber deployments when working opposite another Optimux-108/108L unit or opposite RAD’s LRS-102 central site solution. Suitable for applications where resiliency is not required, the Optimux-108L offers simple “plug-and-play” installation and a compact (½ 19”, 1U) frame. The device has a single fixed power supply and a single fixed uplink