**Block Category:** Random Generator

**Description:** The erlang block generates random
numbers for a standard Erlang distribution. The Erlang distribution is a
continuous probability distribution with wide applicability primarily due to its
relation to the exponential and Gamma distributions. The Erlang distribution was
developed by A. K. Erlang to examine the number of telephone calls which might
be made at the same time to the operators of the switching stations. This work
on telephone traffic engineering has been expanded to consider waiting times in
queueing systems in general. The distribution is now used in the field of
stochastic processes. For more information, see http://en.wikipedia.org/wiki/Erlang_distribution)

**Alpha:** Specifies the shape of the curve. You must
specify an integer greater than 0. The variance is proportional to alpha. You
can enter a value as a C
expression.

**Lambda:** Is referred to as the rate parameter. As you
increase the value of Lambda, the variance decreases by lambda^{2}.**
**You can enter a value as a C expression.

**Label:** Indicates a user-defined block label that appears when
**View > Block Labels** is activated.