WvDial sacrifices some of the flexibility of programs like "chat" in
 order to make dialup configuration easier. With WvDial, modems are
 detected automatically and only three additional parameters are
 required: the telephone number, username, and password. WvDial knows
 enough to dial with most modems and log in to most servers without any
 other help.
 .
 In particular, a "chat script" is not required to handle the most common
 situations.