How do I configure WinRPI?
RPI+ modems require the application to issue the AT&C1&D2&K3+H11 command to it before connecting. You will probably want to set it as part of the default initialization string in your COMM program. RPI modems can be configured with the Windows applet called “WinRPI Enhancer” (WRPIEN.EXE). See the WinRPI release notes for more information.