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<div class="div">
<h1>Activating IMSI Based Handover</h1>

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<h2>Before you start</h2>

<p>Make sure you have a valid IBHO licence installed and that
IBHO is in use.</p>


<p>In order for the IMSI-Based Handover to work, the MSC must send the
subscriber's IMSI in the Common ID message to the BSC in the call set-up phase.
In the case of inter-BSC handover, the MSC sends the IMSI in the Handover
Request message. IMSI transmission is controlled with the Common ID supported
option for BSSAP, which has to be set on in the MSC. For instructions on configuring
IMSI transmission in the MSC, see the MSC documentation: <em>Base
Station Controller Handling in MSC</em>.</p>


<p>GSM-WCDMA Inter-system Handover (ISHO) must be active in the BSC before
GSM-to-WCDMA IBHO can be used.</p>
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<h2>Steps</h2>

<layer visibility="hide"><p class="title"><span class="ExpCollAll" onclick="ExpCollAll(false); return false"><img alt="Expand/collapse all" border="0" class="ExpColl" name="blockTitle" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" />
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<h3>Check the activation
status of the IBHO licence (W7I).</h3>
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</li>
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<div class="action-in-short">
<h3>Activate the IBHO licence and IBHO
software if needed (W7L).</h3>
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</li>
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<div class="action-in-short">
<h3>Make sure that IMSI transmission
has been activated in the MSC.</h3>
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</li>
<li type="1"><a name="jan1151324378" shape="rect"></a>
<div class="action-in-short">
<h3>Define the Authorised Networks which
provide equal access rights to specified mobile subscriber groups (E4C).</h3>
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</li>
<li type="1"><a name="jan1151325299" shape="rect"></a>
<div class="action-in-short">
<h3>Define the Subscriber Groups and
attach them to the desired Authorised Networks (E4E).</h3>
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</li>
<li type="1"><a name="jan11513254410" shape="rect"></a>
<div class="action-in-short">
<h3>Define IBHO handling for anonymous
subscribers (EEQ).</h3>
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</li>
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<h3>Enable IBHO functionality in the
cells which only provide limited access to GSM and WCDMA networks (EQM).</h3>
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<p class="title"><span class="block-title" onclick="expandBlock('block1'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block1Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> Define the missing neighbour cells
of the foreign GSM networks (EAC).</span></p>
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<li type="1"><a name="jan11513261713" shape="rect"></a>
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<p class="title"><span class="block-title" onclick="expandBlock('block2'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block2Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> Define the missing neighbour cells
of the foreign WCDMA networks (EAE).</span></p>
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