Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

How to detect signal on telephone line using microcontroller?

Status
Not open for further replies.

khongai

Full Member level 4
Full Member level 4
Joined
May 20, 2005
Messages
229
Helped
16
Reputation
32
Reaction score
11
Trophy points
1,298
Activity points
2,919
How can i detect signal on telephone line ( use for both pulse and tone dial) use MCU ?
May anyone give idea to me ?
and diagram, tutorial, ...?
 

Re: Telephone line ???

Try circuits from this link:
**broken link removed**
Regards,
IanP
 

    khongai

    Points: 2
    Helpful Answer Positive Rating
Re: Telephone line ???

Which signal do you want to detect ?
ring signal?
voice ?
 

Re: Telephone line ???

all of them.
 

Re: Telephone line ???

I'll suggest...

1. If you want to detect the DTMF and dial pulse,
there are some commerical chips can do this job.
You can search in google...
2. If you want to detect the ring signal,
you may use high voltage zener diode to detect the ring signal...

Hope it will help you....
 

Telephone line ???

Did you searched on Microchip web, they used to have a good reference.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top