Sonsivri
 
*
Welcome, Guest. Please login or register.
Did you miss your activation email?
March 29, 2020, 07:23:20 19:23


Login with username, password and session length


Pages: [1]
Print
Author Topic: 2 way intercom  (Read 1016 times)
0 Members and 1 Guest are viewing this topic.
kumar
Junior Member
**
Offline Offline

Posts: 41

Thank You
-Given: 11
-Receive: 61


« on: March 04, 2020, 05:20:52 05:20 »

Dear members,
Those who wants a simple 2 way intercom with normal telephones with dialling and ringing facility

this simple project comes  from a reputed magazine along with pcb design too....
Logged
enzine
Junior Member
**
Offline Offline

Posts: 77

Thank You
-Given: 452
-Receive: 43


« Reply #1 on: March 05, 2020, 02:46:51 14:46 »

 Embarrassed
From your pdf :

"TWO-WAY PC-FAX INTERFACE"

"This circuit imitates a small telephone exchange, allowing a PC to dial a fax
machine, and vice versa, without actually making use of the public telephone network.
Very useful if you want to employ your fax as a scanner (switch it to high resolution!), or
as a 200-odd dpi printer. For these applications, it is assumed that you have a fax card in
your PC. The software supplied with this card will then enable you to convert scanned
images into the widely used TIFF format. The circuit shown here is suitable for pulse
dialling only. Fortunately, that is still supported by most fax machines and PC fax cards."


?!?

Ciao
« Last Edit: March 05, 2020, 03:51:40 15:51 by enzine » Logged
kumar
Junior Member
**
Offline Offline

Posts: 41

Thank You
-Given: 11
-Receive: 61


« Reply #2 on: March 05, 2020, 04:00:41 16:00 »

I already made  this circuit many times and works without fail.
Simply connect two normal telephone or wall mounted telephone with K2 & K3 terminal.
« Last Edit: March 05, 2020, 05:10:05 17:10 by kumar » Logged
h0nk
Active Member
***
Offline Offline

Posts: 175

Thank You
-Given: 166
-Receive: 129



« Reply #3 on: March 05, 2020, 04:09:20 16:09 »


Hello,

simply replace the fax machine and the fax card with two old phones and You are near the solution.
My old Zyxel U-1496E doesnt like the 50/60 Hz anyway.
It needs the real 25 Hz of an old german rington.


Best Regards
Logged
token0
Newbie
*
Online Online

Posts: 29

Thank You
-Given: 32
-Receive: 46


« Reply #4 on: March 15, 2020, 11:03:55 11:03 »

Also if you have DECT base with two or more handsets: most of models have "int" button, that's the built-in intercom. Cheap and efficient.
« Last Edit: March 15, 2020, 11:06:09 11:06 by token0 » Logged
Pages: [1]
Print
Jump to:  


DISCLAIMER
WE DONT HOST ANY ILLEGAL FILES ON THE SERVER
USE CONTACT US TO REPORT ILLEGAL FILES
ADMINISTRATORS CANNOT BE HELD RESPONSIBLE FOR USERS POSTS AND LINKS

... Copyright 2003-2999 Sonsivri.to ...
Powered by SMF 1.1.18 | SMF © 2006-2009, Simple Machines LLC | HarzeM Dilber MC