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Categories: Telephony Office equipment Telecommunications equipment Discovery and invention controversies Scottish inventions Articles lacking in-text citations |
Summary Of: TelephoneTouch Tone single line business telephone with message waiting light... Touch Tone single line business telephone with message waiting light... Touch Tone single line business telephone with message waiting light... which puts the telephone into an active state or... number buttons in a sequence corresponding to the telephone number of the called party... sending electrical pulses corresponding to the telephone number to the exchange... The circuitry at the telephone exchange detects the absence of DC current flow and thus that the phone is on... the ringing signal transmitted by the telephone exchange activates the alerting device on the line... The resulting current is transmitted along the telephone line to the local exchange then on to the other phone... is a telephone designed for testing the telephone network... Credit for inventing the electric telephone remains in dispute... The early history of the telephone is a confusing morass of claim and counterclaim... invents a liquid transmitter for use with a telephone but does not build one... The first successful telephone transmission of clear speech using a liquid transmitter when Bell spoke into his device... 787 is granted for an electromagnetic telephone using permanent magnets... Early telephone with hand cranked generator... Early telephone with hand cranked generator... Early telephone with hand cranked generator... Modern emergency telephone powered by sound alone... Modern emergency telephone powered by sound alone... personnel was to visit each telephone periodically to inspect the battery... to use a special sound proofed long distance telephone booth furnished with the latest technology... most popular and longest lasting physical style of telephone was introduced in the early 20th century... the network behind the telephone became progressively larger and much more efficient... telephone networks were first modified in the early 1960s by upgrading transmission networks with... telephone electronics devices into... an IP telephone is referred to as a... The Telephone and Its Several Inventors... The Telephone Patent Conspiracy of 1876... Modelling Telephone hybrids as 2 x 2 matices...Encyclodia Page On: Telephone |
