Related terms:
dial
call
edison
caller
ringer box
switch
patent
elisha gray
telephony
local battery
operator
telephone
common battery
induction coil
transmitting
thomas edison
long distance
transmitter
mobile phones
telephone exchange
telephone network
mobile phone
alexander graham bell
Wikipedia sources:
Rotary dial
9-1-1
Telephone
Telephone numbering plan
History of the telephone
Context for words:
rotary
dial
|
|