The IRF-631 converter is a solid solution for applications that require a reliable link between remote terminals and host computers. The unit offers cost-efficiency for extending to distances of 2km (multi-mode) and 120km (long-haul single-mode fiber). Together with its simple-to-setup and install characteristics, the converter makes it easy to combine the advantages of fiber technology within an RS-232 serial-based Network. By facilitating the integration of the existing serial with newer fiber-optic cabling, the IRF-631 represents a cost-effective solution for network administrators eager to keep costs down while upgrading. The converter is ideal for connecting data-communication devices situated in manufacturing-intensive environments where electromagnetic and radio-frequency interference is a major concern. Data integrity is also assured because the characteristics of fiber-optic cables make any break in transmission integrity immediately detectable.