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<h1>System impact of IMSI Based Handover</h1>

<p>The system impact of IMSI Based Handover (IBHO) is specified in the
sections below.</p>


<p>For an overview, see <a href="NED?action=retrieve&amp;identifier=dn04111074&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=aug24164111#aug24164111" onclick="sync(this);return true" shape="rect">Overview
of IMSI Based Handover</a>.</p>


<p>For further information, see <em>IMSI-based Handover</em> in BSC/TCSM
documentation.</p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_2#ned_2" onclick="sync(this);return true" shape="rect">Requirements</a></p>


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<h2>Impact on transmission</h2>

<p>No impact on transmission units.</p>
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<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_6#ned_6" onclick="sync(this);return true" shape="rect">Impact on BSS performance</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_10#ned_10" onclick="sync(this);return true" shape="rect">User interface</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_14#ned_14" onclick="sync(this);return true" shape="rect">Impact on Network Switching Subsystem (NSS)</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_15#ned_15" onclick="sync(this);return true" shape="rect">Impact on NetAct products</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_16#ned_16" onclick="sync(this);return true" shape="rect">Impact on interfaces</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_17#ned_17" onclick="sync(this);return true" shape="rect">Interworking with other SW products</a></p>


<p><a href="NED?action=retrieve&amp;identifier=dn04101127&amp;edition=1&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_18#ned_18" onclick="sync(this);return true" shape="rect">Restrictions</a></p>


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<h2>Impact on mobile terminals</h2>

<p>A GSM - WCDMA compatible mobile terminal is required for GSM-WCDMA inter-system
IMSI based handovers.</p>
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