computes the Erlang C probability for nonzero waiting time in an M/M/c queue.
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Basic Examples (2)
Calls to a technical support center arrive according to a Poisson process with a rate of 30 per hour. The time for a support person to serve a customer is exponentially distributed with a mean of five minutes. Find the minimum number of employees that are needed if the call center wishes to have a probability of 90% that a call will not be delayed.
A company has two 1 Mbps lines connecting two of its sites. Suppose that packets for these lines arrive according to a Poisson process at a rate of 150 packets per second, and that packets are exponentially distributed with mean 10 kilobits. When both lines are busy, the system queues the packets and transmits them on the first available line.
Properties & Relations (3)
Possible Issues (1)
ErlangC is not defined for some values of the parameters:
Wolfram Research (2012), ErlangC, Wolfram Language function, https://reference.wolfram.com/language/ref/ErlangC.html (updated 2017).
Wolfram Language. 2012. "ErlangC." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2017. https://reference.wolfram.com/language/ref/ErlangC.html.
Wolfram Language. (2012). ErlangC. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ErlangC.html