if it’s BUSY HOUR OCCUPANCY
let:
n = (the minutes carried by the trunk DURING THE BUSY HOUR)
a = number of trunks
Busy hour occupancy = (n/60)/ a
if it’s DAILY AVERAGE OCCUPANCY
(w/c isn’t particularly useful for trunk dimensioning)
let:
m = (the minutes carried during the ENTIRE DAY)
a= number of trunks
Daily AVe. Occ = (m/60) / (a*24)