Exit and restart Trumpet. Press esc at the prompts and esc again to abort the script. Go to 'setup.cmd' from the Dialler menu. Type the proper prefix and separate it from the default number with a comma and press enter. Next type your net id so that it will be used by default and press enter.
Next press enter for the init string to keep the default.
Exit and restart Trumpet. If the script continues to abort after the 'Preparing to login' message, try the following steps to get around the terminal server's refusal to cooperate with your system. Start the session as always and get to the point where the message 'Preparing to login' appears. Press esc to abort the login script, and go to the Dialler menu and choose Manual login. Press enter to get the terminal server's attention and enter your username and password as prompted.