Interesting. But i can’t see that the signate book is worth US$50 for downloading though. As it says in the book, most of the information is taken from the voip-info wiki - although “there is still a lot left for you to find”(!)
I think it would be more sensible to just use the voip-info wiki to find the information - it’s kept up to date there, apart from anything else. A printed version of the book is possibly a different matter - it would, at least, have some advantages over the online wiki.
I’m afraid, though, that neither the quality of the writing nor the standard of the proofreading appear to be very professional. Take, for example, the following sentence from Chapter 6, Asterisk Configuration :
The Asterisk community done a trememdous service to the community in creating this resource.
And this is in a sample chapter!
Also, in Chapter 9, IAX Configuration:
Asterisk servers or Asterisk devices like IAX telephones can connect to remote Asterisk servers with Inter Asterisk Exchange (IAX.)
It’s a very sloppy writing style - and why is an IAX phone an “Asterisk device”? Also, i think IAX should be defined as “Inter Asterisk Exchange protocol” - it doesn’t make any sense otherwise.
I can only hope the O’Reilly book is better. However, i think it may be a little early on in the development of asterisk for the first edition of this book to be really worth buying.