NGN KPIs support

[MMAN]

Dears all

Could you please urgent support how i can calculate in Fixed Network the below:-

- Answer to Seizure Ratio (ASR%)
- Trunk Utilization %
- Call Setup Success Rate (CSSR %)
- Network Efficiency Ratio (NER %)
-Successful Switching Attempts (SSA)
-Successful Network Attempts (SNA)
-Average Length of Conversation (ALOC)