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<h1>Improved Solution for Extended Cell</h1>

<p>The extended cell implementation is based on one-BCCH and
two TRX solutions. Different TRXs serve a normal area and an extended area.
The TRX, which serves the normal area, is normally configured with the BCCH/SDCCH
and TCHs. The timing of the receiver of the TRX, which serves the extended
area (E-TRX), has been delayed so that it can serve the area beyond 35 kilometres.
The time slot 0 of E-TRX is tuned to the BCCH frequency in order to get RACH-bursts
from the extended area. The timing of transmitters is same in both TRX and
E-TRX. See the figure below. If more capacity is needed either in a normal
area or an extended area, more TRXs can be added as required to serve those
areas.</p>


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<p>This extended cell is available only to the Nokia Talk-family
BTSs.</p>
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