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If you wish to use our code in other GPL programs, don't worry -- there is no requirement that you provide the same exception in your GPL'd products (although if you've written a module for Asterisk we would strongly encourage you to make the same exception that we do).

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In addition, Asterisk implements two several management/control protocols: . This includes the Asterisk Manager Interface (AMI), the Asterisk Gateway Interface (AGI), and the Asterisk Gateway REST Interface (AGIARI). It is our belief that applications using these protocols to manage or control an Asterisk instance do not have to be licensed under the GPL or a compatible license, as we believe these protocols do not create a 'derivative work' as referred to in the GPL. However, should any court or other judiciary body find that these protocols do fall under the terms of the GPL, then we hereby grant you a license to use these protocols in combination with Asterisk in external applications licensed under any license you wish.

The 'Asterisk' name and logos are trademarks owned by Digium, Inc., and use of them is subject to our trademark licensing policies. If you wish to use these trademarks for purposes other than simple redistribution of Asterisk source code obtained from Digium, you should contact our licensing department to determine the necessary steps you must take. For more information on this policy, please read: httphttps://www.digiumsangoma.com/en/company/profile/trademarkpolicy.phplegal/

If you have any questions regarding our licensing policy, please contact us:

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Digium distributes Asterisk under a multi-licensing model often referred to as Dual-licensing and is additionally made possible by a Contributors License Agreement. This allows Digium to provide Asterisk under licenses other than the GPL. Digium provides information on their alternative commercial licensing at their website.

How can I contribute to Asterisk?

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