Profile: Relcomm, Inc. manufactures data communication devices. Our products include data switches, current loop products and inline buffers. The integrated code operated switch (i -COS) is an integrated logic solution based on proprietary COS-ASIC components, and replaces the previous COS/4 design. In addition to maintaining service to multiple serial ports, the new platform provides additional functionality, replaces obsolete components, and is compliant with lead-free RoHS device standards. The model 387 of the RS449 connects an RS232 interface to an RS449 interface. The unit configures the RS232 as DTE (data terminal equipment) and the RS449 as DCE (data communications equipment). The model 387 is fitted with a DB25F connector and a DB37M connector.