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Asterisk: The Future of Telephony by Leif Madsen, Jared Smith, Jim Van Meggelen

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add

The add command contains many subcommands that allow you to add functionality to your Asterisk PBX without directly editing the configuration files.

When you add a new line to the dialplan your changes immediately become active, but changes made to the dialplan from the command line are not permanent until you save them (see save dialplan). All comments are stripped from the extensions.conf file upon a save dialplan. The add commands are useful for making temporary changes and for ad hoc testing, but we recommend that permanent changes to the dialplan be made directly to extensions.conf in /etc/asterisk/.

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