Hi,
Alarm 7738: BTS WITH NO TRANSACTIONS, could be occur by two reasons:
1. No incoming call, i.e due to DVxx is broken.
2. The cell facing the very rural area, so nobody make call.
The alarm itself will be generated if in one hour continuously detected no call, and the alarm will be cancelled if after one hour detected call has made.
If such alarm occurs, just replace the DVxx or made call in that cell.