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<h2>Configuring IDD at the BSC</h2>

<p>At the BSC, create the BTS with the <span class="command-sem">EQC</span>
command and the TRXs with the <span class="command-sem">ERC</span> command. You have
to define only IDD main TRXs and normal non-IDD TRXs. Make sure you know the
IDD configuration at the BTS site when defining the TRXs at the BSC.</p>


<p>4UD is defined at the BSC by the RXDIV parameter: RXDIV=W (4-way RX
diversity is used).</p>


<p>If IDD is used only for boosting the <a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04445#id04445" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04445#id04445');return false" shape="rect" target="_blank">BCCH</a>
carrier, the IDD TRX has to be defined at the BSC as preferred BCCH TRX. This
definition ensures that the IDD TRX is always used as the BCCH TRX when IDD
TRX is in a working state.</p>
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