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<h1>On-line BTS Software Loading</h1>

<p>When upgrading the BTS software level, it is desirable
to minimise the down time of BTSs.</p>


<p>A new BTS software package can be loaded down to the BTS
on-line during a normal operation. The downloading takes place as a background
operation while supervision and alarm functions as well as call control are
all active. This means that the duration of downloading of a software package
is not included in the down time of the BTS. The same applies also to downloading
of a new BTS hardware database.</p>


<p>During downloading the new package is saved to the non-volatile
memory of the Base Control Function (BCF) unit of a BTS site. When the new
software package is activated, just a site reset is required and the new software
is immediately available on the non-volatile memory.</p>
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