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diff --git a/lib/megaco/doc/src/megaco_intro.xml b/lib/megaco/doc/src/megaco_intro.xml new file mode 100644 index 0000000000..507271bcd8 --- /dev/null +++ b/lib/megaco/doc/src/megaco_intro.xml @@ -0,0 +1,168 @@ +<?xml version="1.0" encoding="latin1" ?> +<!DOCTYPE chapter SYSTEM "chapter.dtd"> + +<chapter> + <header> + <copyright> + <year>2000</year><year>2009</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + The contents of this file are subject to the Erlang Public License, + Version 1.1, (the "License"); you may not use this file except in + compliance with the License. You should have received a copy of the + Erlang Public License along with this software. If not, it can be + retrieved online at http://www.erlang.org/. + + Software distributed under the License is distributed on an "AS IS" + basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + the License for the specific language governing rights and limitations + under the License. + + </legalnotice> + + <title>Introduction</title> + <prepared>Håkan Mattsson</prepared> + <responsible>Håkan Mattsson</responsible> + <docno></docno> + <approved>Håkan Mattsson</approved> + <checked></checked> + <date>2007-06-15</date> + <rev>%VSN%</rev> + <file>megaco_intro.xml</file> + </header> + <p>Megaco/H.248 is a protocol for control of elements in a + physically decomposed multimedia gateway, enabling separation of + call control from media conversion. A Media Gateway Controller + (MGC) controls one or more Media Gateways (MG).</p> + <p>This version of the stack supports version 1, 2 and 3 as + defined by:</p> + <list type="bulleted"> + <item> + <p>version 1 - RFC 3525 and H.248-IG (v10-v13)</p> + </item> + <item> + <p>version 2 - draft-ietf-megaco-h248v2-04 & H.248.1 + v2 Corrigendum 1 (03/2004)</p> + </item> + <item> + <p>version 3: </p> + <list type="bulleted"> + <item> + <p>prev3a - as defined by TD-33 (except segments)</p> + </item> + <item> + <p>prev3b - TD-33 updated to be backward compatible with v2 + (except segments)</p> + </item> + <item> + <p>prev3c - As defined by ITU H.248.1 (09/2005) + (except segments)</p> + </item> + <item> + <p>v3 - Full version 3 as defined by ITU H.248.1 (09/2005) + (including segments)</p> + </item> + </list> + </item> + </list> + <p>The semantics of the protocol has jointly been defined by two + standardization bodies:</p> + <list type="bulleted"> + <item> + <p>IETF - which calls the protocol Megaco</p> + </item> + <item> + <p>ITU - which calls the protocol H.248</p> + </item> + </list> + + <section> + <title>Scope and Purpose</title> + <p>This manual describes the Megaco application, as a component + of the Erlang/Open Telecom Platform development environment. It + is assumed that the reader is familiar with the Erlang + Development Environment, which is described in a separate User's + Guide.</p> + </section> + + <section> + <title>Prerequisites</title> + <p>The following prerequisites is required for understanding the + material in the Megaco User's Guide:</p> + <list type="bulleted"> + <item> + <p>the basics of the Megaco/H.248 protocol</p> + </item> + <item> + <p>the basics of the Abstract Syntax Notation One (ASN.1)</p> + </item> + <item> + <p>familiarity with the Erlang system and Erlang programming</p> + </item> + </list> + <p>The application requires Erlang/OTP release R10B or later.</p> + </section> + + <section> + <title>About This Manual</title> + <p>In addition to this introductory chapter, the Megaco User's + Guide contains the following chapters:</p> + <list type="bulleted"> + <item> + <p>Chapter 2: "Architecture" describes the architecture + and typical usage of the application.</p> + </item> + <item> + <p>Chapter 3: "Internal form and its encodings" describes + the internal form of Megaco/H.248 messages and its various + encodings.</p> + </item> + <item> + <p>Chapter 4: "Transport mechanisms" describes how + different mechanisms can be used to transport the + Megaco/H.248 messages.</p> + </item> + <item> + <p>Chapter 5: "Debugging" describes tracing and debugging.</p> + </item> + </list> + </section> + + <section> + <title>Where to Find More Information</title> + <p>Refer to the following documentation for more information about + Megaco/H.248 and about the Erlang/OTP development system:</p> + <list type="bulleted"> + <item> + <p><url href="http://www.erlang.org/project/megaco/standard/rfc3525.txt">version 1, RFC 3525</url></p> + </item> + <item> + <p><url href="http://www.ietf.org/rfc/rfc3015.txt">old version 1, RFC 3015</url></p> + </item> + <item> + <p><url href="http://www.erlang.org/project/megaco/standard/H.248.1-Corr1-200403.doc">Version 2 Corrigendum 1</url></p> + </item> + <item> + <p><url href="http://www.erlang.org/project/megaco/standard/draft-ietf-megaco-h248v2-04.txt">version 2, draft-ietf-megaco-h248v2-04</url></p> + </item> + <item> + <p><url href="http://www.itu.int/">TD-33 (Draft H.248.1 version 3)</url></p> + </item> + <item> + <p><url href="http://www.itu.int/">H.248.1 version 3</url></p> + </item> + <item> + <p>the ASN.1 application User's Guide</p> + </item> + <item> + <p>the Megaco application Reference Manual</p> + </item> + <item> + <p>Concurrent Programming in Erlang, 2nd Edition (1996), + Prentice-Hall, ISBN 0-13-508301-X.</p> + </item> + </list> + </section> +</chapter> + |