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<h3>Restrictions with Multi BCF</h3>

<p>The use of Multi <a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04982#id04982" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04982#id04982');return false" shape="rect" target="_blank">BCF</a> and the
segment environment causes restrictions for the functionality of the following
application and operating software.</p>


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<h4>SDCCH
allocation with Multi BCF Control</h4>

<p>With Multi BCF the extent of the SDCCH search in initial
SDCCH allocation for the call setup and SDCCH allocation for the external
handover depend on the values of the <span class="parameter-sem">Non
BCCH Layer Offset</span> parameters in BTSs other than the BCCH BTS. If the
value of the parameter in the <a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03816#id03816" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id03816#id03816');return false" shape="rect" target="_blank">BTS</a> is positive, the channel is not
allocated from that BTS.</p>
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<h4>TCH
allocation with Multi BCF Control</h4>

<p>With Multi BCF the extent of the TCH search in both FACCH
setup and external handover depend on the values of the <span class="parameter-sem">Non BCCH Layer Offset</span> parameters in BTSs other than the<a href="NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04445#id04445" onclick="openSmallPopup(event,'NED?action=retrieve&amp;identifier=general_glossary&amp;edition=13&amp;language=en&amp;coverage=global&amp;encoding=xhtml_1_0&amp;component=data&amp;item=data&amp;pointer=id04445#id04445');return false" shape="rect" target="_blank"> BCCH</a> BTS. If the value of the parameter in the BTS
is positive, the channel is not allocated from that BTS.</p>
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<h4>Dynamic
SDCCH allocation with Multi BCF Control</h4>

<p>With Multi BCF the extent of the SDCCH search in initial
SDCCH allocation for the call setup depend on the values of the <span class="parameter-sem">Non BCCH Layer Offset</span> parameters in BTSs other than the
BCCH BTS. If the value of the parameter in the BTS is positive, the channel
is not allocated from that BTS. The same restriction applies to dynamic SDCCH
allocation.</p>
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<h4>Extended
cell range and Multi BCF Control</h4>

<p>In the segment environment only the BCCH BTS can have extended
area TRXs.</p>
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<h4>Intelligent
Underlay-Overlay (IUO) and Multi BCF Control</h4>

<p>The super-reuse layer of a BTS in a segment with several
BTSs can be accessed only via the regular layer of the BTS. Direct access
to the super-reuse resources is not supported in segments with more than one
BTS.</p>


<p>The child cell concept is not supported when the segment
architecture is used.</p>
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<h4>Cell
broadcast and Multi BCF Control</h4>

<p>User gives definitions for the BCCH BTS only.</p>
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<h4>Intelligent
Coverage Enhancement and Multi BCF Control</h4>

<p>Intelligent Coverage Enhancement can be used only in the
BCCH BTS of the Multi BCF segment.</p>


<p>Low power TRXs cannot be in a BTS that does not have a BCCH TRX.</p>
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<h4>BCCH
TRX</h4>

<p>The BCCH channel is recovered only inside a BTS radio network
object. In a BCCH TRX fault situation the BCCH is not reconfigured from one
BTS to another BTS. The new BCCH TRX has to be found from the same BTS radio
network object.</p>
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<h4>Multi BCF site reset by user</h4>

<p>Recovery for BSS and Site Synchronisation enables you to define the
synchronisation chain configuration to BSC Radio Network Database. If the
synchronisation chain is not defined and enabled, Multi BCF restart is only
possible with a series of BCF site reset MML commands (instead of a single
command).</p>
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