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4 answers

perhaps you like to read this!!!

http://en.wikipedia.org/wiki/Alexander_Bell

2006-11-01 13:59:22 · answer #1 · answered by Sigrid 5 · 0 0

Electricity. Changing voice to electrical impulses for the distance and then reversing the process on the receiving end.

2006-11-01 20:28:19 · answer #2 · answered by J.D. 6 · 0 0

Voice over wire.

2006-11-03 20:28:39 · answer #3 · answered by Dorkboy 7 · 0 0

Laymens term......2 tin cans and wire.

2006-11-01 20:30:15 · answer #4 · answered by Anonymous · 0 0

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