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<h2>Monitoring and troubleshooting </h2>

<p>The monitoring tools for the air interface are: MS engineering
display, TOM (NMS/X) (NEMO), and TEMS (Ericsson Erisoft).</p>


<p>The key things to monitor when troubleshooting the air
interface are:</p>


<ul>
<li><p>Classmark change (CM3)</p>
</li>
<li><p>Uplink</p>
</li>
<li><p>System information 2ter</p>
</li>
<li><p>Downlink (in idle mode)</p>
</li>
<li><p>System information 5ter</p>
</li>
<li><p>Downlink (in dedicated mode</p>
</li>
</ul>


<p>The monitoring tools for the Abis and A-interface (MAP)
are: Nethawk GPA (X-Net) and Siemens K1103.</p>


<p>The key things to monitor when troubleshooting the A-interface
are:</p>


<ul>
<li><p>Classmark update</p>
</li>
<li><p>Uplink and inclusion of CM3 in HO request
message (in external HOs)</p>
</li>
<li><p>Downlink </p>
</li>
</ul>


<p>'When troubleshooting the MAP interface, the following
should be monitored: </p>


<ul>
<li><p>Inclusion of CM3 in HO request message
(in inter-MSC HOs) from source MSC to target MSC</p>
</li>
</ul>


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<h3>Related
topics</h3>

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