rotary switching system
1Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …
2Rotary system — The Rotary machine switching system was a type of automatic telephone exchange manufactured and used in Europe from the 1910s. It was developed by Bell Labs in America when they were developing the Panel system [ Fagen, M.D. A History of… …
3Rotary dial — A German Fe TAp 615, (R g) a widespread rotary dial telephone of the 1960s to the 1980s The rotary dial is a device mounted on or in a telephone or switchboard that is designed to send electrical pulses, known as pulse dialing, corresponding to… …
4Director telephone system — The Director System was a system which made it possible to call subscribers at other telephone exchanges without operator intervention in large multi exchange cities, and to have a mixture of automatic and manual exchanges within these cities. It …
5Ignition system — For other uses, see Ignition system (disambiguation). An ignition system is a system for igniting a fuel air mixture. Ignition systems are well known in the field of internal combustion engines such as those used in petrol (gasoline) engines used …
6Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private …
7Lobe switching — is a method used on early radar sets to improve tracking accuracy. It used two slightly separated antenna elements to send the beam slightly to either side of the midline of the antenna, switching between the two to find which one gave the… …
8Railway electrification system — Railway electrification supplies electrical energy to railway locomotives and multiple units so they can operate without having a reciprocating engine of their own.CharacteristicsThe main advantage of electric traction is a higher power to weight …
9Schafer automation system — The first Schafer Automation System, installed at KGEE(AM) in Bakersfield, California in 1956, was dubbed the blue wire job because all of the wiring in it was blue, its inventor, Paul Schafer said. The owner wanted to program his station all… …
10telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… …
