tatical communications

What were the original methods of switching telephone calls?

How does a rotary dial phone operate?

How does a touch tone phone operate?

What are some historic and modern methods used to transmit telephone signals?

Please feel free to use web based sources as well.

Your paper should be 1-2 pages in length and answer all parts of the question above.

Please also cite in APA format when you use the text or source material.