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sojie
New Member

1 Posts
Posted - Sep 26 2006 :  4:30:02 PM  Show Profile  Reply with Quote
Hi all,
I am studying for a Btec National Diploma in Electrical/Electronic Engineering. I am required to Design and build a project related to my studies. I am considering doing a project involving a telephone ringer system. I am seeking the following information:
a) What is the normal dc voltage on phone lines in the UK?
b) What is the ac ring signal voltage and frequency in the UK?

Can anyone provide links to any official website with info.

Thank you all

(Edit...Move to Telephone)
Edited by - Aaron Cake on Sep 29 2006 09:48:09 AM

Binary 1011001101
Nobel Prize Winner

United Kingdom
569 Posts
Posted - Sep 27 2006 :  10:07:12 AM  Show Profile  Reply with Quote
Have a look on this site, has lots of info on phone lines and stuff http://web.ukonline.co.uk/freshwater/howtele.htm
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