The 8-Channel Multiplexer/Demultiplexer (EWDM-MUX8=) allows you to multiplex/demultiplex eight DWDM channels and combine them with up to 8 CWDM channels into one pair of fiber. Dual fiber is used for both the network connection and the transceiver connections. The eight available wavelengths are 1542.94 nm, 1542.14 nm, 1540.56 nm, 1539.77 nm, 1538.98 - 1560.61 nm, 1559.79 nm, and 1558.98 nm. The multiplexer/demultiplexer, shown in figure, is equipped with a port that allows you to connect to the booster amplifier.