Answer / puneet verma

1. Neighbours Definition with Co BCCH and BSIC.
2. Wrong HO Synchronisation.
3. Non Symmetrical (One Way Neighbours).
4. Adjacencies Discrepancies.
5. High TCH Congestion.
6. Missing Potential Neighbours.
7. Missing Frequencies on Active State of BA List.
8. Creation of unwanted far of Neighbours with low signal
strength
9. Abis failure (PCM related faults).
10. VSWR-DAC Values Issues.
11. BTS Hardware Issues.

Answer / herge

How can i classify the causes of those handover failures?

Answer / shekhar bhaiya

most you hang around entry level to internediate level
answers to HO failues in GSM. Here are some heavy hitters
to consider:
1. Speech Codec mismatch
2. Encryption/Ciphering mismatch

And, much more.

Cheers.

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