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diff --git a/doc/chaniax.tex b/doc/chaniax.tex deleted file mode 100644 index 954e068b0..000000000 --- a/doc/chaniax.tex +++ /dev/null @@ -1,84 +0,0 @@ -\subsection{Introduction} - -This section is intended as an introduction to the Inter-Asterisk -eXchange v2 (or simply IAX2) protocol. It provides both a theoretical -background and practical information on its use. - -\subsection{Why IAX2?} - -The first question most people are thinking at this point is "Why do you -need another VoIP protocol? Why didn't you just use SIP or H.323?" - -Well, the answer is a fairly complicated one, but in a nutshell it's like -this... Asterisk is intended as a very flexible and powerful -communications tool. As such, the primary feature we need from a VoIP -protocol is the ability to meet our own goals with Asterisk, and one with -enough flexibility that we could use it as a kind of laboratory for -inventing and implementing new concepts in the field. Neither H.323 or -SIP fit the roles we needed, so we developed our own protocol, which, -while not standards based, provides a number of advantages over both SIP -and H.323, some of which are: - -\begin{itemize} - \item Interoperability with NAT/PAT/Masquerade firewalls - \begin{itemize} - \item IAX seamlessly interoperates through all sorts of NAT and PAT - and other firewalls, including the ability to place and - receive calls, and transfer calls to other stations. - \end{itemize} - \item High performance, low overhead protocol - \begin{itemize} - \item When running on low-bandwidth connections, or when running - large numbers of calls, optimized bandwidth utilization is - imperative. IAX uses only 4 bytes of overhead - \end{itemize} - \item Internationalization support - \begin{itemize} - \item IAX transmits language information, so that remote PBX - content can be delivered in the native language of the - calling party. - \end{itemize} - \item Remote dialplan polling - \begin{itemize} - \item IAX allows a PBX or IP phone to poll the availability of a - number from a remote server. This allows PBX dialplans to - be centralized. - \end{itemize} - \item Flexible authentication - \begin{itemize} - \item IAX supports cleartext, md5, and RSA authentication, - providing flexible security models for outgoing calls and - registration services. - \end{itemize} - \item Multimedia protocol - \begin{itemize} - \item IAX supports the transmission of voice, video, images, text, - HTML, DTMF, and URL's. Voice menus can be presented in both - audibly and visually. - \end{itemize} - \item Call statistic gathering - \begin{itemize} - \item IAX gathers statistics about network performance (including - latency and jitter, as well as providing end-to-end latency - measurement. - \end{itemize} - \item Call parameter communication - \begin{itemize} - \item Caller*ID, requested extension, requested context, etc are - all communicated through the call. - \end{itemize} - \item Single socket design - \begin{itemize} - \item IAX's single socket design allows up to 32768 calls to be - multiplexed. - \end{itemize} -\end{itemize} - -While we value the importance of standards based (i.e. SIP) call handling, -hopefully this will provide a reasonable explanation of why we developed -IAX rather than starting with SIP. - -\subsection{Configuration} - -For examples of a configuration, please see the iax.conf.sample in -your the /configs directory of you source code distribution. |