It depends on your average traffic per subscriber. Different countries and different cultures. In the UAE the average traffic per subscriber is 75miliErlang one of the highest in the world. While the nominal is 25miliErlang. In our country it is 33miliErlang. If your average traffic per subscriber is high your BSC can handle less subscribers. but I don’t remember the formulae. someone else may help you.
So how we can calculate MOU per subscriber per month ?
Some refrence talk about it and they said that in some operator it reach 800 , mou =800 , in china 2015 there are some reports talk about mou =430
How i can calculate
In our network 21 to 30 merl