Modem Doctor 3.1
Modem Doctor performs a thorough modem testing - the program runs over 60 tests. Modem Doctor is intended for testing and fine-tuning virtually any type of modem connected to any port (including PCI, PCMCIA, USB), as well as devices connected with your modem (ports, etc). Capable of quick switching among preassigned parameters. On the developer's Web site, Modem Doctor versions for Windows 3.1 and DOS are available for download.