Telecom & Networking
Intermediate
Erlang Traffic Intensity
Offered call traffic from call rate and average holding time.
Formula
Variables
ATraffic (Erlangs)
\lambdaCall arrival rate
hAverage call duration
Example
λ=120/hr, h=3 min=0.05 hr: A = 6 Erlangs
Did You Know?
One Erlang equals a single circuit kept busy continuously — the unit is named after Danish engineer A. K. Erlang.
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