User's Manual

Nokia MetroSite Base Station Commissioning
18 (34) © Nokia Telecommunications Oy Internal Copy NTC DN999099
Confidential Issue 1 en DRAFT 3 Draft
Note
Caution
Note
During the BTS/BSC start-up scenario the BSC checks the BTS SW and if
it is not the correct one, the BSC loads SW to the BTS. This downloading
will take from 5 to 20 minutes depending on the link speed. If no SW
downloading takes place, the process will take about 10 seconds. After that
the BSC sends the configuration data to the BTS.
11. When the BCF is in the ‘Supervisory’ state and the TRXs are ready for
testing, the BTS tests are run under the BSC’s control. The BSC runs
automatic tests on the Abis link and on each TRX installed in the BTS.
The TRX test will take about 6 - 7 seconds for one TRX, 15 seconds for 4
TRXs (one radio time slot per each TRX is tested), while the Abis loop test
will take about 1 minute 50 seconds (all channels of every TRX are tested).
If the establishment of the BTS/BSC connection does not succeed, the BTS
remains in the ‘Waiting for LAPD’ state. Then you can click the Manual button
to run local TRX tests. You can also run manual tests after the automatic BSC-
controlled tests are over.
In order not to interfere the operation of other sites, make sure that an RF
attenuator is connected to every TRX in the BTS before you start local TRX tests.
The BTS starts operating normally after the tests have been performed, if
the TRXs are unlocked at the BSC. The BCCH TRXs’ LEDs are green and
the TCH TRXs’ LEDs are blinking green.
12. Check the test results on the BTS Test Reporting page and click Next.
The test results can be monitored at the BSC. It is also possible to request the
latest test results remotely from the NMS/2000.