High-Speed Arlan B Calculator (Calculates call volume a based on call loss rate B and number of lines n)
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The target call loss rate can be specified within the range of 0.01% to 99.99%.
Erlang B Formula
B = (a^n/n!)/(1+a/1!+a^2/2!+a^3/3!+…+a^n/n!)
B: Call loss rate
a: Call volume
n: Number of circuits
Erlang B Formula
B = (a^n/n!)/(1+a/1!+a^2/2!+a^3/3!+…+a^n/n!)
B: Call loss rate
a: Call volume
n: Number of circuits
| Quantity a | Arlan |
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Calculates call volume a based on the target call loss rate B and the number of lines n.