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<title>Enabling EGPRS in BSC </title>
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<div class="div">
<h1>Enabling EGPRS in BSC </h1>

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<div class="purpose">
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<div class="topic">
<h2>Purpose</h2>

<p>In order to enable EGPRS in a cell you first have to create
the dynamic Abis pool and then create a TRX which uses the pool. When the
TRX using the dynamic Abis pool is created, GPRS must be disabled in the cell.
GPRS must be enabled in the cell (parameter <code class="parameter-code">GENA</code> set to Y) and EGPRS enabled
in the BTS (parameter <code class="parameter-code">EGENA</code>
set to Y) in order to enable EGPRS traffic in the BTS. If <code class="parameter-code">GENA</code> is set to N then
EGPRS traffic is also disabled.</p>


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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd><p>To get BCCH recovery to work correctly, it is recommended
that you take the following conditions into account, when unlocked non-EDGE-capable
and EDGE-capable TRXs exist in same BTS: </p>



<p>If the BTS has EGPRS enabled (<code class="parameter-code">EGENA</code>=Y) and the BCCH TRX is EDGE-capable
and has the parameter <code class="parameter-code">GTRX</code>
set to Y, then all EDGE-capable unlocked TRXs which have <code class="parameter-code">GTRX</code> set to Y should be
marked as Preferred BCCH TRXs. </p>



<p>If the BTS has EGPRS enabled (<code class="parameter-code">EGENA</code>=Y) and the BCCH TRX is non-edge-
capable and has the parameter <code class="parameter-code">GTRX</code> set to N, then all non-EDGE-capable unlocked
TRXs which have <code class="parameter-code">GTRX</code>
set to N, should be marked as Preferred BCCH TRXs.</p>



<p>A TRX is an EDGE-capable TRX if the TRX HW is EDGE capable
and it is added to EDAP. A TRX is a non-EDGE-capable TRX if the TRX has no
EDGE HW or it is not added to EDAP.</p>
</dd>
</dl>


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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd>Deleting TRXs and taking them into use for enabling EGPRS
in BSC has to be done during low traffic hours. All the calls will be dropped
when this procedure is being carried out.</dd>
</dl>
</div>
</div>


<div class="sequence">
<h2>Steps</h2>

<layer visibility="hide"><p class="title"><span class="ExpCollAll" onclick="ExpCollAll(false); return false"><img alt="Expand/collapse all" border="0" class="ExpColl" name="blockTitle" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" />
Expand/collapse all</span></p>
</layer>
<ol class="type-odd">
<li type="1"><div class="action-in-detail">
<a name="block1Title" shape="rect"></a>
<div>
<p class="title"><span class="block-title" onclick="expandBlock('block1'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block1Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> Create the dynamic Abis pool</span></p>
</div>


<div class="text" id="block1Text">
<ol class="type-even">
<li type="a"><p>Check whether you have a suitable dynamic
Abis pool created (<span class="command-sem">ESI</span>)</p>
</li>
<li type="a"><p>If not, create the dynamic Abis pool
(<span class="command-sem">ESE</span>)</p>


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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd>See the prerequisites in <a href="NED?action=retrieve&amp;identifier=dn03300448&amp;edition=3&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=feb223132431#feb223132431" onclick="sync(this);return true" shape="rect">Planning and managing EGPRS implementation</a>.</dd>
</dl>
</li>
</ol>
</div>
</div>
</li>
<li type="1"><a name="feb2231331286" shape="rect"></a>
<div class="action-in-short">
<h3>Disable the GPRS in
the cell (EQV)</h3>
</div>
</li>
<li type="1"><a name="mar431726489" shape="rect"></a>
<div class="action-in-short">
<h3>Lock the BTS (EQS)</h3>
</div>
</li>
<li type="1"><a name="mar431727510" shape="rect"></a>
<div class="action-in-short">
<h3>Lock the TRX (ERS)</h3>
</div>
</li>
<li type="1"><a name="mar4317271611" shape="rect"></a>
<div class="action-in-short">
<h3>Delete the TRX to be
connected to Dynamic Abis pool (ERD)</h3>
</div>
</li>
<li type="1"><a name="feb2231332347" shape="rect"></a>
<div class="action-in-detail">
<a name="block2Title" shape="rect"></a>
<div>
<p class="title"><span class="block-title" onclick="expandBlock('block2'); return false"><layer visibility="hide"><img alt="Expand/collapse" border="0" class="ExpColl" name="block2Title" src="NED?action=retrieve&amp;identifier=dn01157982&amp;edition=1&amp;language=none&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /></layer> Create a TRX which
uses the dynamic Abis pool (ERC)</span></p>
</div>


<div class="text" id="block2Text">
<p>All the TRXs that will be using EGPRS in the BTS must be
attached to a dynamic Abis pool.</p>
</div>
</div>
</li>
<li type="1"><a name="feb223133328" shape="rect"></a>
<div class="action-in-short">
<h3>Unlock the TRX (ERS)</h3>
</div>
</li>
<li type="1"><a name="feb2231333129" shape="rect"></a>
<div class="action-in-short">
<h3>Enable EGPRS in the
BTS by giving value Y to parameter EGENA (EQV)</h3>
</div>
</li>
<li type="1"><a name="mar4317282313" shape="rect"></a>
<div class="action-in-short">
<h3>Enable GPRS in the
cell by giving value Y to parameter GENA (EQV)</h3>
</div>
</li>
<li type="1"><a name="mar431732115" shape="rect"></a>
<div class="action-in-short">
<h3>Unlock the BTS (EQS)</h3>
</div>
</li>
</ol>
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