Now let’s go to the Modem Control box and finish the T-PDS configuration. The Modem Control box is a handy database that will store a remote site name, modem initialization parameters, and the phone number of the remote site. You can move between the fields using the TAB key.
The most important parameter here is the “Initialize” parameter. T-PDS will not successfully dial out or disconnect without this. The parameter shown here is the "S25” register which controls the time that the PC modem can have a DTR loss before hanging up. Since T-PDS toggles the DTR line on the COM port during modem connection and hang-up, this parameter must be set to accommodate your modem. The setting of S25 = 50 worked on the US Robotics modems. Of course, you must also enter the number of the site to be called. Save your work and click the appropriate “OK” buttons.
