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<div class="div">
<h1>Nokia Base Station Controller</h1>

<p>Nokia Base Station Subsystem consists of the base station
controller (BSC), transcoder submultiplexer (TCSM), base station (BTS), cellular
transmission (CT), the network service and management system (Nokia NetAct)
and network planning.</p>


<p>Based on Nokia's long experience in cellular networks,
Nokia Base Station Controller (BSC) is designed for the efficient use of radio
resources, easy operability and maintainability. It is also designed to gather
and convey comprehensive information about the quality of service. Moreover,
it is cost-efficient and has high capacity. Nokia Base Station Controller
is a stable, mature product, with field-proven high reliability and multivendor
functionality.</p>


<p>Nokia BSC provides a connection between the MSC, the BTSs,
and the SGSN.</p>


<p>The main function of the BSC is to control and manage the
BSS and the radio channels. It transfers signalling information to and from
the mobiles and manages handovers between the cells.</p>


<a name="nov1431343188" shape="rect"></a>
<div class="topic">
<h2>BSC3i</h2>
</div>


<p>Nokia High Capacity Base Station Controller BSC3i is a solution
for the evolving GSM markets. The maximum circuit handling capacity of a BSC3i
is 660 TRX, 3920 Erl. The BSC3i has a compact one-cabinet design; it is also
modular in order to enable easy expansion. It has built-in IP connectivity
for enhanced feature support with IP-based interfaces. It uses transmission
and radio resources efficiently in order to enable a flexible traffic mix
between voice and data. It has a swift fault detection and hot standby units
to allow minimal system downtime.</p>


<p>BSC3i is based on BSC S10.5 or later software.
It includes the same features as BSC, BSC2i and BSC2E/A products.</p>


<a name="dec331330211" shape="rect"></a>
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<img alt="urn:mars:dn01195905:5:en:global:tiff:data:data" border="0" src="NED?action=retrieve&amp;identifier=dn01195905&amp;edition=5&amp;language=en&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /><p class="figure-caption">Figure: Nokia Base Station Controller, BSC3i</p>
</div>


<p>For more information, see <em>BSC3i</em>.</p>


<a name="nov1431344269" shape="rect"></a>
<div class="topic">
<h2>BSC2i</h2>
</div>


<p>Nokia Base Station Controller DX 200 BSC2i is a digital
switching product for GSM networks. Nokia BSC belongs to the DX 200 Switching
System Product Family based on a Fault Tolerant Computing Platform, which
constitutes a base for a Switching Platform.</p>


<a name="dec331331212" shape="rect"></a>
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<img alt="urn:mars:dn01164172:5:en:global:tiff:data:data" border="0" src="NED?action=retrieve&amp;identifier=dn01164172&amp;edition=5&amp;language=en&amp;coverage=global&amp;encoding=gif&amp;component=data&amp;item=data" /><p class="figure-caption">Figure: Nokia Base Station Controller, DX200 BSCi, BSC2i</p>
</div>


<p>Nokia Base Station Controller is easily expandable due
to the modular architecture of the DX 200 Switching System Product Family
and the use of the latest hardware components. In the design of Nokia Base
Station Controller great attention has been paid to the reliability of operation.</p>


<p>The distributed architecture of Nokia Base Station Controller
is implemented by a multiprocessor system. In a multiprocessor system the
data processing capacity is divided among several computer units, each of
which has a microcomputer of its own. For example, the call handling capacity
depends on the number of call control computer units. By adding more call
control computer units the capacity of Nokia Base Station Controller can be
easily increased.</p>


<p>Nokia Base Station Controller is a stand-alone network
element in the BSS. It is connected to the surrounding network elements with
standard PCM interfaces. This offers flexibility and cost-efficiency in transmission.
Nokia Base Station Controller has an X.25 and a LAN connection to Nokia NetAct
called Q3 interface. The Q3 interface is used for data transfer between Nokia
Base Station Controller and Nokia NetAct.</p>


<p>For more information on Nokia Base Station Controller,
see <em>High Capacity Base Station Controller, BSC2i, BSCi</em>.</p>


<a name="nov1331147582" shape="rect"></a>
<div>
<p>Table: High capacity BSCi and BSC2i</p>


<table border="1">
<tbody>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>TRX number (max.)</p>
</td>
<td colspan="1" rowspan="1"><p>512, or 256 FR , or HR</p>


<p>512 (ANSI) FR (ANSI)</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Erl</p>
</td>
<td colspan="1" rowspan="1"><p>3040</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Size (height x width x depth)</p>
</td>
<td colspan="1" rowspan="1"><p>2200 mm x 1200 mm x 500 mm two racks</p>


<p>2020 mm x 1200 mm x 500 mm (ANSI)</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Power consumption</p>
</td>
<td colspan="1" rowspan="1"><p>max. 620 W</p>


<p>max. 595 W (ANSI)</p>
</td>
</tr>
</tbody>
</table>
</div>


<a name="nov1331157303" shape="rect"></a>
<div>
<p>Table: BSC3i</p>


<table border="1">
<tbody>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>TRX number (max.)</p>
</td>
<td colspan="1" rowspan="1"><p>660 FR</p>


<p>330 HR</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Erl</p>
</td>
<td colspan="1" rowspan="1"><p>3920</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Size (height x width x depth)</p>
</td>
<td colspan="1" rowspan="1"><p>2000 mm x 900 mm x 600 mm one rack</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Power consumption</p>
</td>
<td colspan="1" rowspan="1"><p>1700 W</p>
</td>
</tr>
</tbody>
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