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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-0E0D4E95-470F-54BE-8DCB-719976C8B84C" xml:lang="en"><title>What
+is Contention Management?</title><shortdesc>This topic describes contention management and the contention management
+process flow. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>When a contention issue arises the Access Point priorities of the incoming
+connection and the existing connections are compared. If the incoming Access
+Point has a higher priority than an existing Access Point the existing Access
+Point connection is stopped and the new Access Point connection is started.
+If the incoming Access Point priority is lower than or equal to an existing
+Access Point connection the incoming Access Point is ignored. </p>
+<section><title>Contention Management Process Flow</title> <p>This section
+outlines the contention management process flow and the associate components. </p> <p>The
+following diagram describes the Contention Management Process Flow. </p><p>The following steps describe what happens when a PDP context contention issue
+occurs in the system: </p> <ol>
+<li id="GUID-F614DD0D-491E-4E4A-B255-90A50B0CAB8E"><p>The PDP Meta-Connection Provider (MCPR) of the starting connection
+calls the <codeph>HandleContentionL</codeph> function of the PDP Tier Manager.</p></li>
+<li id="GUID-E77116E5-E364-47CF-9878-502DD869804A"><p>The PDP Tier Manager has an <codeph>iPDPContentionManagement</codeph> instance
+of the <codeph>CPDPContentionManagement</codeph> class. The contention request
+is added to <codeph>iPDPContentionManagement</codeph>. </p></li>
+<li id="GUID-8DAF207F-3320-4DF4-A69E-9824DA800D12"><p>The ContentionManager starts processing the asynchronous contention
+request. The priorities assigned to all active connections in the system are
+extracted from the MCPR Access Points. The ContentionManager delivers the
+extracted priorities to the Contention Management Activity. </p></li>
+<li id="GUID-D1DD47FC-F6EA-4F00-A684-FE67DC02AE26"><p>The existing connection priorities are compared with the new connection
+priority and one of the following occurs:</p></li>
+<li id="GUID-0254D697-B9B0-4D24-8262-BB94C3294016"><p>If the priority of the new connection is lower than those of the existing
+connection, the new connection is not permitted.</p></li>
+<li id="GUID-D1A41F47-9CFA-4755-BA82-DC05E6F100A7"><p>If the priority of the new connection is higher than one of the existing
+connections, the lowest priority connection is stopped and the new connection
+is permitted and started.</p></li>
+<li id="GUID-E4E8C34B-5305-46B3-AB17-F1CEB6BC741F"><p>Each connection relates to a single application on the mobile device.
+One of the following occurs when the connection and application is terminated: </p></li>
+<li id="GUID-54B99BA1-16C3-45FC-8400-C37F354B651A"><p>If the application that uses the stopped connection is contention-aware
+it calls <codeph>RConnection::Start()</codeph> with the <codeph>TConnAutStartPref</codeph> parameter.
+The application starts when the contention is finished.</p></li>
+<li id="GUID-BD9CF0F3-D080-42AE-BA18-537E8DA9AD35"><p>If the application that uses the stopped connection is not contention-aware
+a disconnection notification is sent to the user without an error message
+stating why the connection stopped. </p></li>
+</ol></section>
+</conbody><related-links>
+<link href="GUID-CD57B3EB-B8FD-53CE-B319-FB6275BE391E.dita"><linktext>What is Contention?</linktext>
+</link>
+<link href="GUID-FF81C5C5-09B7-5194-928E-0BA87417B2CD.dita"><linktext>What are
+Access Point                 Priorities?</linktext></link>
+</related-links></concept>
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