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'[OT]: cheapo switch board.'
2001\03\23@093340 by fstanley

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I need a way to achieve a cheap and simple switch board. eg some way to
simulate the dial tone etc with three phones connected together on this
network. It is for school kids to learn how to call 911 without connecting
to the real network.
Does anyone know available chip sets or set-up ?
TIA

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2001\03\23@152229 by Bill Westfield

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   I need a way to achieve a cheap and simple switch board. eg some way
   to simulate the dial tone etc with three phones connected together on
   this network. It is for school kids to learn how to call 911 without
   connecting to the real network.

There are certainly "telephone line simulators that will do this (see
http://www.teltone.com/ Look for TLS-4.)  But you said cheap.  Oops.
(MSRP ~$800.)

My daughter has a toy phone that looks relatively real.  It answers
(ISD-style recorded voice) to 911 ("911.  What is the emergency", or
something like that), and also on a programmable number with a
recordable message (ie your phone number, and "Hello, this is daddy.")
I can't find it at the moment, and don't remember the brand, though.
(this sort of thing is well within the capabilities of a PIC+ISD, of
course, but it doesn't use real phones and doesn't have interactive
capability.)

BillW

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