[comp.dcom.telecom] DIY Residential Phone Switch

af@sei.ucl.ac.be (Alain FONTAINE (Postmaster - NAD)) (08/27/90)

A few weeks ago, I told you that the Dutch magazine 'Elektuur' (which
also has numerous editions in other languages) had announced the
publication of a DIY phone switch project. This is just to tell you
that I have just received my copy of the september issue of the dutch
edition, and it does *not* contain this project. No need to try to
find it...
 
Background note: it has already happened in the past that announced
projects have been delayed. They usually appear some day (this
magazine has published some very sophisticated projects).  /AF

af@sei.ucl.ac.be (Alain FONTAINE (Postmaster - NAD)) (10/03/90)

I have just received the October issue of the magazine 'Elektuur'
(Dutch edition).  It does contain the promised project. I have not
seen any other edition yet, so I can't say anything about publication
in other languages.
 
A long description would probably ruin this already overcrowded list.
I'll just tell you that there are two boards: a generic analog
interface and switching board, and a microcomputer board based on the
8052-AH-BASIC processor. Eight extensions, one 'foreign network' port.
Software written in BASIC, modifiable by hooking a terminal to the
microcontroller. Obvious weaknesses: no DTMF decoder (yet, it could
certainly be added - maybe a future project); no dial tone generator
(but busy is implemented). 


AF