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Asterisk: The Definitive Guide, 4th Edition by Leif Madsen, Jim Van Meggelen, Russell Bryant

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Chapter 18. External Services

Correct me if I’m wrong—the gizmo is connected to the flingflang connected to the watzis, watzis connected to the doo-dad connected to the ding dong.

Patrick B. Oliphant

Asterisk is pretty nifty all by itself, but one of the most powerful, industry-changing, revolutionary aspects of Asterisk is the sheer number of wonderful ways it may be connected to external applications and services. This is truly unprecedented in the world of telecom. In this chapter, we’ll explore some popular services and applications that you can integrate with your Asterisk system. Here are some of the external connections we’ve decided to cover (Asterisk has more, but our editor is waiting for us to finish this edition, which is already the largest Asterisk book yet):

  • If you use Lightweight Directory Access Protocol (LDAP) in your network (such as with Active Directory), we’ll show you how to load your SIP users from your LDAP services.

  • For the person on the go with a dynamically changing calendar, we’ll sample some ideas on how you can integrate Asterisk with your calendaring server (allowing for automatic call redirection based on your current status).

  • If you’re a fan of instant messaging, there is a section on how to communicate with Asterisk via the XMPP (Jabber) protocol.

  • If you want to tie your voicemail into your Internet Message Access Protocol (IMAP) server, we’ll take you through the basics.

  • Want to teach your phone system to read? We’ll cover the basics of text-to-speech. ...

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