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<div class="div">
<h1>Transmission Equipment Software Download Improvements</h1>

<p>The support for transmission equipment software download functionality
can be used for downloading and activating a new software build to transmission
equipment. The software download can be used whenever a software version needs
to be updated or changed in the network element.</p>


<p>The software download is a two-phase process where software is first
downloaded and then activated. First you create a network element group and
attach equipment to it. Then you create the software build and
attach it to the network element group. Software downloading to the equipment
starts after you have activated the software build in the network element
group.</p>


<p>The software download is done as a multicast download to several pieces
of transmission equipment in up to 105 Q1 channels or buses simultaneously.
Two new PRFILE parameters, <span class="parameter-sem">MAX_BSC_TRE_SW_DL_COUNT</span>
and <span class="parameter-sem">MAX_BTS_TRE_SW_DL_COUNT</span>, define how many software
download processes can be active simultaneously at the BSC and BTS site, respectively.
The numbers range from 1 to 5 (default 3) for BSC site and 1 to 100 (default
100) for BTS site.</p>


<p>It is possible to attach three different software builds to a NE group.
They have the following attachment statuses:</p>


<ul>
<li><p>BACKUP: software build that is normally defined as the active,
running software build</p>
</li>
<li><p>FALLBACK: software build that is a fallback copy of the backup
build</p>
</li>
<li><p>NEW: new software build</p>
</li>
</ul>


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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd>When the BSC software is upgraded to S11.5, the software build information
is converted, but the information on the attached transmission equipment is
lost.</dd>
</dl>
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