A PCM Voice Telephone Media Converter Over Fiber with Ethernet is a device that allows for the transmission of voice signals over fiber optic cables. The optical switch is the conversion between the electrical interface and the optical interface of the Ethernet. We concentrate on fiber optical communication and network access. The PCM telephone Optical ASIC devices are developed by our company independently. This PCM-F04 point to point fiber transmitting equipment, which is designed on large scale integrated circuit, realizes 1 channel 10/100M Ethernet, 4 channel voice phone. The 30 Channel voice multiplexer provide a method of multiplexing up to 30 analog (POTS) channels over a single pair of multimode or single mode fibers.
