What are the causes of silent calls and what are the possible solutions?

RAN
22

What are the main reason behind Silent calls on BSC level (Ericsson)?

23

Please how can i troubleshoot silent calls using U2020 for nodeB?

24

Please check my reply here (for your same query): KPIs/Counters to check mute call - #26 by CarlosFuente

25

Have you checked Null NRI values , is pilot site and some rollout ?