Hello
Cell utilization -Traffic (erl)*100/Traffic design (ERL table (B))
Eg
CELl utilization Per CELL
Cell _1 with real traffic =10 erl
and TCH=12 channel and GOS =2%
so we have to review erlang table B , we will find the design traffic at TCH = 12 and GOS =2% =6.615
Design traffic =6.615 so cell utilization = 10*100/6.615
i hope it is clear