(The most authoritative tutorial to introduce the core of Asterisk softswitch, this book is the third edition (Note: the original English version, but the words are quite easy to understand, I just passed the level of English level 6 and it seems to be relatively easy to cooperate with Youdao, I believe You heroes are no problem). Some pages in Chapter 5 of the book are out of order and missing, and I have attached the corrections to the resource. If the Internet is convenient, I suggest you go to the official website directly, ofps.oreilly/titles/9780596517342/ You know that almost all softswitch systems are based on Asterisk. The introduction of Asterisk in the book is quite detailed, especially the installation and configuration and DialPlan Part of it, I, who have never been in contact with softswitches, are also enlightened after reading it. I hope you can gain something after reading it. I am also a beginner in Asterisk. If you have any doubts, let’s discuss it together. Email najunuoyan@126,
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