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Positioning</a></td>
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<h2>Lb+ interface</h2>

<p>Lb+ interface is an interface between stand-alone SMLC
and BSC.</p>


<p>It makes possible the use of stand-alone SMLCs in Location
Services. Main purpose of the Lb+ interface is to have a remote access from
the stand-alone SMLC to radio network database in the BSC, so that positioning
related information from the BSC can be copied to the stand-alone SMLC's database.</p>


<p>Nokia Lb interface is extended with Nokia Lb+ protocol
because O&amp;M functions are not fully standardised in 3GPP. Lb+ part provides
signalling such as the modification of LCS parameters and definitions. The
Lb interface can also be utilised without the Lb+ part.</p>
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