pmx opmux-fl100 pdh multiplexer combines four/eight e1 channels and one 10/100m lan channel over a single fiber optic link. a pair of pmx opmux-fl100 offers simple and low-cost connectivity for these e1 and lan traffic up to 80km. opmux-fl100 supports 1+1 optical link redundancy with als function (automatic laser shutdown/reduction). pmx opmux-fl100 fiber optic multiplexer can be used to extend the transmission distance without performance degradation via fiber cable between two fast ethernet segments transparently. pmx opmux-fl100 has found wide applications in carriers, paging stations, electricity, railway, oil-fields and banks, as point-to-point applications and central-site to multipoint application. its compact 1-u high enclosure facilitates easy installation and maintenance.