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<h1>BTS Local User Interface - BTS MMI</h1>

<p>Local access and control over the BTS are required especially
during commissioning and later during service and maintenance activities.</p>


<p>The BTS-MMI is a menu-based software, which allows users
to monitor and control the operation of the BTS and to configure it during
commissioning. The BTS-MMI can be used even if there is no Abis-connection
available to the BSC thus making it an ideal tool for commissioning and testing.</p>


<p>The local access to the BTS via the BTS-MMI can be password-protected.
Password is saved to the non-volatile memory of the BCF unit of the BTS, and
it can be changed only locally on sites with the BTS-MMI. If the password
is changed, an alarm is generated to the BSC to indicate this. It is also
possible to omit the password inquiry if there is no need for it.</p>


<p>The BTS MMI offers an unrestricted access to the BTS tests
and units. All test facilities are available from the BTS MMI including RFTE/STM
loops, STM tests (such as antenna loops, sensitivity, test calls), and BBU
tests. The device control functions can be used in the BTS testing, for example,
the transmitter can be switched on at the desired power level and frequency,
if necessary. Operating software can be locally loaded via a connection to
the BCF unit of the BTS.</p>


<p>TRXs or the whole site can be reset with a BTS MMI command.
Objects can also be locally blocked from operation for local maintenance purposes.
If an object needs to be taken away from service, a local block command from
MMI will generate a blocking alarm to the BSC, which will then block the object
from service. The BSC then clears all calls from the concerned TRX and takes
appropriate measures to restore traffic on remaining TRXs as it would do with
real equipment failure. Object can be restored back to traffic with the unblock
command.</p>


<p>All active alarms of the BTS can be listed with BTS MMI.
Listing contains either all alarms (the unit level view) or relevant alarms
where some alarms are filtered away based on the configuration.</p>


<p>The Menu Based HW Database Editor assists users in creation
of the HW database. It has built-in knowledge of the possible configurations
available with different cabinet types. When defining the contents of the
database, the user has to input only some general level information, such
as cabinet type, the number of sectors, TRXs, and some other units. Based
on this and on the built-in information about the different configurations,
the tool can automatically generate a HW database.</p>


<p>The tool has different levels of details available according
to the user needs. The top level contains more or less the parameters described
above, the other levels provide an increasing number of details and control
over the other parameters in the database.</p>


<p>Note that the BTS MMI for Nokia 2nd generation and Nokia
Talk-family &amp; Nokia PrimeSite BTS families are different application.
The above description is generic and applies to both applications.</p>


<p>Existing DOS-based BTS MMI applications are updated to
Windows applications. The platform for the new MMI is Win95 and NT. The existing
functionality in DOS applications will be supported with more or less the
same 'look and feel' of the current MMI.</p>
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