The Bosch LTC8780/60 is designed to convert an Allegiant's Biphase code into an RS-232 code and back to biphase code for transmission over conventional mediums such as phone modems, fiber optics and microwave. In addition to a main Allegiant CPU bay, this unit will accept biphase signals from an LTC8568 Signal Distribution unit, an LTC5135 series controller/ follower, an output from a LTC 8569 series or an LTC8570, LTC8571, LTC8572 series Code Merger unit.