when we open the telephone, what is the volt of telephone line? and when we push a button (for example #1) from calling phone, what is the amplitude volt of #1 button?.. I just know frquency of that, it is (697Hz+1297Hz). plase could you answer these questions??
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when we open the telephone, what is the volt of telephone line? and when we push a button (for example #1) from calling phone, what is the amplitude volt of #1 button?.. I just know frquency of that, it is (697Hz+1297Hz). plase could you answer these questions??
thaks..
TOLGAKN 2 months ago