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<h2>Deactivating BSS Synchronisation</h2>

<p>When BSS Synchronisation is deactivated, the master BCF stops receiving
the clock signal from the LMU and starts to supply clock for the whole site.
The BTS site returns to site synchronisation.</p>


<p>To deactivate BSS synchronisation for a site, do as follows:</p>


<ol class="type-odd">
<li type="1"><p>Lock the master clock BCF (EFS).</p>
</li>
<li type="1"><p>Disable BSS synchronisation and return to site synchronisation
by giving the parameter <span class="parameter-sem">Clock Source</span> the value <em>BCF</em>
(EFM). </p>
</li>
<li type="1"><p>Unlock the master clock BCF (EFS).</p>
</li>
<li type="1"><p>Wait until the site has restarted and check the synchronisation
configuration and status (EFL).</p>
</li>
</ol>


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<dl class="note-notification">
<dt class="note-caption">Note</dt>
<dd>Unlocking the master clock BCF after disabling BSS synchronisation causes
a reset in the whole chained site and a short period of network downtime.</dd>
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