The connect script tells the dialler to "wait until to see a specific text string, then send the text string I tell you to send". You do this once for the userid, once for the password, and that's it. It's a bit slower than standard authenticating via Password Authentication Protocol (PAP), but every now and then, that's just what's needed.
You need to configure it so that it looks like this:
Any settings in the connect script are supposed to override any settings in the "Authentication" screen. All the same, it's usually a good idea to click on "Authentication" at this point and delete the userid and password.
What it is
Procedure
menu, chose "Control Panels" and select "ConfigPPP"