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<h1>System impact of Support for Cell Global Identity</h1>

<p>Support for Cell Global Identity is operating software.</p>


<p>For additional information, see <em>Support
for Cell Global Identity</em> in BSC/TCSM documentation.</p>


<p><a href="NED?action=retrieve&amp;identifier=dn03513863&amp;edition=3&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.</p>
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<p><a href="NED?action=retrieve&amp;identifier=dn03513863&amp;edition=3&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=dn03513863&amp;edition=3&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>


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<h2>Impact on Network Switching Subsystem (NSS)</h2>

<p>Nokia MSC supports CGI-specific GSM cell definitions and
moreover, handovers between PLMN areas if <em>Feature 1168:
Multiple PLMN and Inter-PLMN Handover Support in MSC</em> has been activated.</p>


<p>It is possible to change the tariff of a call when an inter-PLMN
handover occurs in Nokia MSC. However, charging modifications are not supported
in the case of intra-MSC inter-PLMN handovers.</p>
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<p><a href="NED?action=retrieve&amp;identifier=dn03513863&amp;edition=3&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=ned_13#ned_13" onclick="sync(this);return true" shape="rect">Impact on NetAct products</a></p>


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<h2>Impact on interfaces</h2>

<p>PAFILE parameter <span class="parameter-sem">CELL
IDENTIFIER</span> identifies the coding of the cell identifier used in handover
messages on the A interface.</p>


<p>The current default value of this BSC parameter is 1 (LAC+CI).
Before inter-PLMN handovers are possible between BSCs, the operator must change
the parameter value to 0 (CGI) by using MML command <span class="command-sem">EGP</span>.</p>
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<h2>Interworking with other features</h2>

<p>No interoperability issues.</p>
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<h2>Impact on mobile terminals</h2>

<p>No requirements for mobile terminals.</p>
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