Which of the following Key Performance Indicators (KPIs) were assessed by TRAI during the Independent Drive Tests for voice services?
1. Call Setup Success Rate
2. Drop Call Rate (DCR)
3. Speech Quality using Mean Opinion Score (MOS)
4. Data Throughput
Select the correct answer using the code below:
1
1 and 2 only
2
1, 2, and 3 only
3
2, 3, and 4 only
4
1, 2, 3, and 4