peter@uunet.uu.net (10/29/89)
When you call one of these fancy automatic operators, they generally say something like "to select a service, enter 1 now, or hold and an operator will take your call". This way if you can't generate tones you go back to the default action. So a smart paging service would respond with something like "to enter a number, enter 1 now, or hang up and your number will be automatically generated".