Home > Products > Voice Fiber Optic Multiplexers > CLR-FXS-1600                 CLR-FXS-1600, CLR-FXO-1600       16 Channels Telephone POTS over Fiber Multiplexer, FXO/FXS Set                       Ordering Information                   CLR-FXS-1600 FXS 16 Voice to Fiber Converter SM SC 20km CLR-FXO-1600 FXO 16 Voice to Fiber Converter SM SC 20km