How can start work with Asterisk?

Asterisk Asterisk Support
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How can start work with Asterisk?
Please Help Me…

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Start by reading the book: “Asterisk: The Future of Telephony” (Version 2).
h6315.com/ast_docs/Asterisk%20TFOT%20v2.pdf
Also poke around on the wikie:
voip-info.org