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Cell Relay Retreat>List Archive>month:1998-Jun> msg00139



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Re: Statistics voice models.

  • From: "Jerry Harder" <jharder@sprynet.com>
  • Date: Sat, 27 Jun 1998 23:26:49 -0500


Félix Eduardo Einfalt Méndez wrote in message
<6n39m7$8ev$1@debris.uits.indiana.edu>...
>Hi my friends,
>I request for help again. Someone know where can I find information
>about statistics voice models? I know the Markovian process, but I want
>to find a call process. What's the PDF for time between calls [snip]
>--
>Félix Eduardo Einfalt Méndez.
>Estudiante de Ingeniería Civil Eléctrica.
>Universidad de Chile.
>
Most practical voice modeling at the private or public network level for
voice assumes a nonstationary Poisson process dependent on time of day and
day of week. Erlang B is a very popular formula for trunk sizing. For
certain sizings in COs, Erlang-Engset is used, since the number of
subscribers is limited.


André Girard, Routing and Dimensioning in Circuit-Switched Networks,
Addison-Wesley Publishing Company, New York, 1990 is highly recommended
since it addresses major analytical approached to designing voice public
switched networks.

Good luck,

Jerry Harder
Senior Partner
RTA, Inc.
615-843-0444
 jharder@sprynet.com