Blocking probabilities calculated by the exact and approximate solutions for various levels of neighbour- spoofed spam calls. The blue curves depict the toy enumeration example above (solid line is exact, dashed line is approximate), for which π = π£π£ and π = π¦πͺ. All other curves apply to the number blocking problem, for which π = π©π©. For these, the exact and approximate results are visually indistinguishable.
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