Erlang fixed Point Approximation (EFPA >decoupling a given system into independent server groups >total traffic offered to any server follows a Poisson process all individual input streams all overflow attemptsErlang Fixed Point Approximation (EFPA) ➢decoupling a given system into independent server groups ➢total traffic offered to any server follows a Poisson process ▪ all individual input streams ▪ all overflow attempts 10