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<h2>Interworking with other SW products</h2>

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<h3>GSM-WCDMA Inter-System Handover (ISHO)</h3>

<p>ISHO must be enabled for IMSI Based Handover to WCDMA RAN cell to work.</p>
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<h3>Multiple PLMN and Inter-PLMN Handover Support
in MSC &amp; HLR</h3>

<p>Multiple PLMN and Inter-PLMN Handover Support in MSC &amp; HLR must
be enabled in the MSC to make handovers between PLMNs possible.</p>
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<h3>Dynamic Frequency and Channel Allocation
(DFCA)</h3>

<p>IMSI Based Handover to GSM should not be used simultaneously with DFCA.
If the BTS-specific parameter <span class="parameter-sem">IBHO GSM ENABLED </span>is
enabled, the idle BA list cannot be used in active mode. This affects the
reporting from undefined neighbour cells and weakens the functioning of DFCA
in call set-up. </p>


<p>IMSI Based Handover to WCDMA can be used with DFCA without restrictions.</p>
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<h3>Enhanced Measurement Reporting (EMR)</h3>

<p>The SI5x messages are sent according to the default ANE (IMSI Based
Handover GSM Cells Anonymous) on the SDCCH channel; that is, the GSM/EDGE
neighbours are measured according to the default ANE list. This means that
IMSI-based selective neighbour measuring is not possible on the SDCCH. On
the TCH, the call-specific SI5x and MI messages are sent from the beginning
of the channel reservation, and the mobile starts to measure the call-specific
neighbours and report with EMR as soon as it has received the SI and MI messages.</p>
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<h3>BCCH Allocation (BA) Frequency List</h3>

<p>A BCCH allocation frequency list cannot be used for active MSs (MSs
that have an active CS connection, such as a call) in the same cell as IBHO
to GSM. IBHO to GSM functionality requires that active MSs use a BCCH frequency
list that is constructed from the neighbour GSM cells defined for the BTS
or SEG.</p>
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<h3>Measurements </h3>

<p>The following measurements cannot be used in a cell where IMSI Based
Handover to GSM is enabled:</p>


<ul>
<li><p>Undefined Adjacent Cell Measurement</p>
</li>
<li><p>Channel Finder Measurement</p>
</li>
<li><p>Defined Adjacent Cell Measurement</p>
</li>
<li><p>Total FEP Measurement</p>
</li>
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