New to Asterisk!!! You Should have this.,
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This review is from: Asterisk: The Definitive Guide (Paperback)
this is a great book to being with , explained every and every topic greatly, my self new to VOIP telephony started with other resources later felt missing so many concepts since i have this feel so comfortable to work with asterisk and VOIP. this book should be your first book and later you can use as reference. i really like it.