This directory contains the source for VTH. The files dummy2 and dummy3 are not used at all. To get the system going, edit vth.for, find the places where it references specific files, and change them for your system (or remove them). $ fortran vth,setterm,setpar,getjpi,wait $ link vth,setterm,setpar,getjpi,wait Put a modem onto one of your terminal ports. Assign the logical name dial_out_modem so that vth knows which port to use. Run vth. Issue the RESTART command. (The START command attempts to initialize a specific type of modem which we use here, made by BIZCOMP). At that point all characters you type will be sent to the modem, and all characters sent into the modem will appear on your screen. Type a ^A to return to command mode. At that point the LOGFILE= command can be used to create a log file. Please see the help file for details.