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<div class="div">
<h1>External Interfaces of the Nokia InSite Base Station</h1>

<a name="feb26412435013" shape="rect"></a>
<div class="topic">
<h2>Antenna
interface</h2>

<p>The Nokia InSite Base Station has its own built-in antenna,
but external antennas can also be used.</p>
</div>


<a name="feb26412443314" shape="rect"></a>
<div class="topic">
<h2>Abis</h2>

<p>Two ETSI HDSL (High bit-rate Digital Subscriber Line) interfaces
including a clock distribution are used for the Abis connection. The HDSL
interfaces provide a 1Mbps signal on a single-pair wire.</p>


<p>The E1 interface can also be used for the Abis connection.
It conforms to the specifications for an ETSI E1 terminal equipment interface.</p>


<p>With the Nokia InHub Data Service Unit in use, also T1
connection can be used.</p>
</div>


<a name="feb26412452515" shape="rect"></a>
<div class="topic">
<h2>Local
Management Port for BTS and transmission units</h2>

<p>This is the physical and logical interface between the
BCF part of the baseband module of the transceiver unit and a Local Management
Tool (LMT). The Local Management Port (LMP) is located in the baseband part
and is a multi-point communications link conforming to the Nokia Q1E specification.
The LMP also provides debugging interfaces.</p>
</div>


<a name="feb26412461916" shape="rect"></a>
<div class="topic">
<h2>User
interface and visual operation indicators</h2>

<p>There are visual indicators to show the status of the Nokia
InSite Base Station:</p>


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<div>
<p>Table: Visual operation indicators</p>


<table border="1">
<thead>
<tr align="left" char="" charoff="50" valign="bottom">
<th colspan="1" rowspan="1" valign="top"><p>Description</p>
</th>
<th colspan="1" rowspan="1" valign="top"><p>Coulour</p>
</th>
<th colspan="1" rowspan="1" valign="top"><p>On</p>
</th>
<th colspan="1" rowspan="1" valign="top"><p>Blinking</p>
</th>
<th colspan="1" rowspan="1" valign="top"><p>Implementation</p>
</th>
</tr>
</thead>
<tbody>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Power</p>
</td>
<td colspan="1" rowspan="1"><p>Green</p>
</td>
<td colspan="1" rowspan="1"><p>Power supply on</p>
</td>
<td colspan="1" rowspan="1"><p>Low supply voltage level</p>
</td>
<td colspan="1" rowspan="1"><p>Supply voltage ADC reading with fixed threshold</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Call On</p>
</td>
<td colspan="1" rowspan="1"><p>Green</p>
</td>
<td colspan="1" rowspan="1"><p>At least one call on</p>
</td>
<td colspan="1" rowspan="1"><p>BCCH test transmission ON</p>
</td>
<td colspan="1" rowspan="1"><p>TS allocation counter</p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Device Error</p>
</td>
<td colspan="1" rowspan="1"><p>Red</p>
</td>
<td colspan="1" rowspan="1"><p>BTS initialisation in progress</p>
</td>
<td colspan="1" rowspan="1"><p>BTS internal error</p>
</td>
<td colspan="1" rowspan="1"><p>Any self test failed (blinking), BTS boot going on (LED
is switched off when CONF_COMPLETE message is sent to BSC) </p>
</td>
</tr>
<tr align="left" char="" charoff="50" valign="top">
<td colspan="1" rowspan="1"><p>Transmission Error</p>
</td>
<td colspan="1" rowspan="1"><p>Red</p>
</td>
<td colspan="1" rowspan="1"><p>Abis Link initialisation</p>
</td>
<td colspan="1" rowspan="1"><p>No Abis link</p>
</td>
<td colspan="1" rowspan="1"><p>Transmission status- LED lit until OMUSIG LAPD link is
properly established </p>
</td>
</tr>
</tbody>
</table>
</div>
</div>


<a name="feb2641325618" shape="rect"></a>
<div class="topic">
<h2>Power
Supply</h2>

<p>The Nokia InSite Base Station has a connector to supply
the DC power.</p>
</div>
</div>
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