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<h3>Impact on A interface</h3>

<p>The following message has been introduced due to GSM-WCDMA Inter-System
Handover:</p>


<ul>
<li><p>Handover to UTRAN command message (MSC -&gt; BSS)</p>
</li>
</ul>


<p>The following messages have changed due to GSM-WCDMA Inter-System Handover:</p>


<ul>
<li><p>Handover Request message (MSC -&gt; BSS)</p>
</li>
<li><p>Handover Required message (BSS -&gt; MSC)</p>
</li>
<li><p>Handover Command (MSC -&gt; BSS)</p>
</li>
</ul>


<p>MSC contains A interface support for <em>3GPP 24.008
Mobile Radio Interface Layer 3 specification (CC/MM), release 1999</em>.</p>
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