Asterisk: The Future of Telephony, 2nd Edition

Chapter 14. Potpourri

The first 90 percent of the task takes 90 percent of the time, and the last 10 percent of the task takes the other 90 percent of the time.

—The Ninety:Ten Rule

The toughest part of writing this book was not finding things to write about, but rather deciding what we would not be able to write about. Now that we’ve covered the basics, you are ready to be told the truth: we have not taught you anywhere near all that there is to know about Asterisk.

Now please understand, this is not because we didn’t want to give you our very best; it’s merely because Asterisk is, well, limitless (or so we believe).

In this chapter, we want to give you a taste of some of the wonders Asterisk holds in store for you. Nearly every section in this chapter could become a book in itself (and they will become books, if Asterisk succeeds in the way we think it is going to).

Festival

Festival is a popular open source text-to-speech engine. The basic premise of using Festival with Asterisk is that your dialplan can pass a body of text to Festival, which will then “speak” the text to the caller. Probably the most obvious use for Festival would be to have it read your email to you when you are on the road.^[147]

Getting Festival Set Up and Ready for Asterisk

There are currently two ways to use Festival with Asterisk. The first (and easiest) method—without having to patch and recompile Festival—is to add the following text to Festival’s configuration file (festival.scm, usually located in /etc/ or ...