i try to summrise these Discussion
we need to calculate traffic per sub. if we have only BHCA and MHT
i think we need No. of VLR sub. because
from BHCA and MHT we can calculate Traffic (ERL)
BHCA In BH * MHT(sec.)In BH = total time of call (sec.)
we can convert to (ERL) by divid it /3600 =(traffic(erl))
this is accordinf to what is the traffic we need to know (seziure , through connection ,or answer)
if we know the duration of call we can estimate traffic(erl) directly .
I think all vendors define like these counters in their system.
thanks a lot .