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Chapter 10. Deeper into the Dialplan > Handy Asterisk Features
10.8. Handy Asterisk Features
Now that we’ve gone over some more of the basics, let’s look at a few popular functions that have been incorporated into Asterisk.
10.8.1. Zapateller()
Zapateller() is a simple Asterisk application that plays a special information tone at the beginning of a call, which causes auto-dialers (usually used by telemarketers) to think that the line has been disconnected. Not only will they hang up, but their systems will flag your number as out of service, which could help you avoid all kinds of telemarketing calls. To use this functionality within your dialplan, simply call the Zapateller() application.
