Seminar Topics & Project Ideas On Computer Science Electronics Electrical Mechanical Engineering Civil MBA Medicine Nursing Science Physics Mathematics Chemistry ppt pdf doc presentation downloads and Abstract

Seminar Topics & Project Ideas On Computer Science Electronics Electrical Mechanical Engineering Civil MBA Medicine Nursing Science Physics Mathematics Chemistry ppt pdf doc presentation downloads and Abstract > Engineering Project Ideas > Project Request > electronic change over between multiple telephone lines
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gurubinder

20-10-2011, 11:31 AM
hi,
i was working on a project where we have two sets of telephone lines( one working and other stand by). when ever the primary line fails, the stand by is connected. I wanted to know can we do the change over between the two lines electronically without using mechanical relay. if possible then how?
Seminar Topics & Project Ideas On Computer Science Electronics Electrical Mechanical Engineering Civil MBA Medicine Nursing Science Physics Mathematics Chemistry ppt pdf doc presentation downloads and Abstract > Engineering Project Ideas > Project Request > electronic change over between multiple telephone lines