AVR-Chat

Peter Gargano wrote:

> This thread reminds me of a project I'd like to start (if I had the time). I 
> want a simple, intelligent, 3 (up to 8) line PABX (Private Automatic Branch 
> eXchange) using "normal" phones.
> 
> Maybe someone has seen a DIY PABX somewhere?
> 
> Peter

Yeah, I have designed many PABX's over the years, Some used special 
handsets, others stock standard 48V handsets.

First you need to decide what you want, as some features are not easy to 
impliment without custom parts, my last one I designed for a specific 
aplication used SLIC's (Subscriber Line Interface Circuits) out of an 
old NEC PABX (D3 or in au Telecom system 120) as these handle all the 
line conditioning, ring and tone switching etc.

Regards,

Kat.


-- 
---------------------------------------------------------------
K.A.Q. Electronics	Website: www.kaqelectronics.dyndns.org
IM: Yahoo: PinkyDwaggy  MSN: katinka@kaqelectronics.dyndns.org
For Everything Electronics     Phone: 0419 923 731
---------------------------------------------------------------	


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.296 / Virus Database: 265.6.1 - Release Date: 20/12/2004