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Erlang and Grade of Service Calculator

This page of converters and calculators section covers Erlang and Grade of Service calculator.

Traffic calls offered in busy hour (input1) :

Traffic calls lost (input2) :

Average call duration in minutes (input3) :

Erlang (Output1) :

Grade of Service (Output2) :


*Note: Enter values in INPUT boxes and Press CALCULATE button to check OUTPUTS.

EXAMPLE:
INPUTS: Total traffic calls made(offered) in busy hour = 1400, Traffic calls lost = 7, Average call duration (minutes) = 4
OUTPUTS: Erlang = 93.3 , Grade of Service = 0.005


Erlang and Grade of Service Equation

Both Erlang and GoS(Grade of Service) parameters are used in the telephony system for the measurement of telephone traffic with respect to how good it is performing. Following equation or formula is used for Erlang and Grade of Service calculator.

Erlang and Grade of Service Calculator equation

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