Network blocking probability by efpa Fixed-point iterations Quasi-stationary for short-lived connection Initial values of trunk blocking probability Calculate offered load for each trunk Calculate blocking probability Steady state for each trunk probabilities converge or not? No YES Network blocking probabilityNetwork blocking probability by EFPA 18 Initial values of trunk blocking probability Calculate offered load for each trunk Calculate blocking probability for each trunk Converge or not? Network blocking probability YES No Steady state probabilities Fixed-point iterations Quasi-stationary for short-lived connection