Erlang formula

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• Erlang-B — (sometimes also written without the hyphen Erlang B) is a formula derived from the Erlang distribution to describe the probability of call loss on a group of circuits (in a circuit switched network, or equivalent). It is, for example, used in… …   Wikipedia

• Erlang C —    Formula for designing telephone traffic management for PBXs and networks. It is used when traffic is random and there is queuing, and presupposes that callers will wait indefinitely to make their connection …   IT glossary of terms, acronyms and abbreviations

• Erlang unit — The erlang (symbol E [ [http://www.unc.edu/ rowlett/units/dictE.html How Many? A Dictionary of Units of Measurement] ] ) as a dimensionless unit is used in telephony as a statistical measure of the volume of telecommunications traffic. It is… …   Wikipedia

• Erlang distribution — Probability distribution name =Erlang type =density pdf cdf parameters =k > 0 in mathbb{Z} shape lambda > 0, rate (real) alt.: heta = 1/lambda > 0, scale (real) support =x in [0; infty)! pdf =frac{lambda^k x^{k 1} e^{ lambda x{(k 1)!,} cdf… …   Wikipedia

• Erlang B —    A mathematical formula used to determine the traffic capacity of a given group of circuits …   IT glossary of terms, acronyms and abbreviations

• Agner Krarup Erlang — Contenido 1 Biografía 2 Contribuciones …   Wikipedia Español

• Unidad Erlang — El Erlang es una unidad adimensional utilizada en telefonía como una medida estadística del volumen de tráfico. Recibe el nombre del ingeniero danés A. K. Erlang, pionero de la teoría de colas. El tráfico de un Erlang corresponde a un recurso… …   Wikipedia Español

• Agner Krarup Erlang — Infobox Person name = Agner Krarup Erlang image size = 200px caption = birth date = January 1, 1878 birth place = Lonborg, Denmark death date = February 3, 1929 death place = occupation = mathematician, statistician, and engineer spouse = parents …   Wikipedia

• Pollaczek–Khinchine formula — In queueing theory, a discipline within the mathematical theory of probability, the Pollaczek–Khinchine formula is a formula for the mean queue length in a model where jobs arrive according to a Poisson process and service times have a general… …   Wikipedia

• Teletraffic engineering in broadband networks — Teletraffic engineering is a well understood discipline in the traditional voice network, where traffic patterns are established, growth rates can be predicted, and vast amounts of detailed historical data are available for analysis. However, for …   Wikipedia

• Engset calculation — The Engset calculation is a formula to determine the probability of congestion occurring within a telephony circuit group. It was named after its developer, T. O. Engset. The level of congestion can be used to determine a network s performance as …   Wikipedia