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<h2>Nokia UltraSite EDGE Base Station</h2>

<p>In the Nokia UltraSite Base Station, this information is
stored in the HW info file in the Base Operations and Interface Unit (BOI)
non-volatile memory, and it can be displayed in Nokia BTS Manager (see in
the figure below).</p>


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<p>Autodetection minimises the amount of parameters that must
be entered manually and thus reduces the chance for errors when site configuration
is determined.</p>


<p>There are two types of autodetection procedures: full autodetection
and polling autodetection.</p>


<p>Full autodetection goes through the complete autodetection
process for the entire BTS including: checking the existence of units, checking
part and serial numbers, checking air interface synchronisation master/slave
settings, checking for the existence of MHAs, Site Support systems, etc. Full
autodetection is performed during commissioning of a new site and when there
are major changes to a site’s configuration. Full autodetection can only be
initiated via the MMI, and the information that is autodetected is saved as
a part of the system data.</p>


<p>Polling autodetection procedure performs constant polling
of units during a normal BTS operation similarly as in the Nokia MetroSite
BTS. This polling checks part and serial numbers of existing units and checks
if new units have been installed. After a BCF, BTS, or TRX reset, units are
polled and checked for any changes. If an existing unit's part and serial
numbers change, the new information is saved to the system data file.</p>


<p>If units detected by full autodetection do not respond
to polling, they are reported as faulty. To detect that units have been removed,
full autodetection must be initiated.</p>


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<h3>Upgrade
to an existing site</h3>

<p>When new plug-in units are added, they are detected by
polling autodetection procedure provided that the unit supports this, that
is, passive units cannot be polled (passive units are not connected to D2-,
Q1- or I2C-bus). If the new unit is already defined in the Configuration file
stored in the BOI, autoconfiguration can be performed, and the unit can be
taken into use immediately. If the Configuration file does not contain the
needed information concerning the new unit, the unit stays in a “non-commissioned”-state.
The MMI is used to commission the new unit. Information about the new unit
such as RF cable configuration, TRX logical ID, antenna cable attenuation
if required etc., is entered. Upon this, the updated Configuration file is
downloaded and saved to the BOI and OMU reset is given to take the new Configuration
file into use. The BOI SW reset does not disturb calls being carried by the
BTS.</p>


<p>Information about the Nokia UltraSite EDGE BTS site configuration
is structured as follows:</p>


<ul>
<li><p>All information that is autodetected
is stored in as a part of the System Data. User cannot modify this information.
The information sources are autodetection procedure and BSC configuration
data.</p>
</li>
<li><p>Configuration data contains information,
which must be entered manually by the user, that is, information which cannot
be autodetected such as: RF cable information, TRX IDs, attenuation values
for adjustable gain Dual Band Duplex Units, cabinet type etc.</p>
</li>
<li><p>Hardware Information: Part and serial
number information for units, which cannot be autodetected, is stored in as
a part of the Hardware Information data.</p>
</li>
</ul>
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