Model 500 telephone

2500500-type telephone1500500500 and 2500 series500" desk telephone500-series telephonesmodel 2500standard desktop telephoneTraditional 500/554 Rotary Phone
The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture.wikipedia
45 Related Articles

Model 302 telephone

300-series telephone300-type302-type telephone
The Western Electric 500-type telephone replaced the 300-type which had been produced since 1936.
The model 302 telephone is a desk set telephone that was manufactured in the United States by Western Electric from 1937 until 1955, and by Northern Electric in Canada until the late 1950s, until well after the introduction of the 500-type telephone in 1949.

Western Electric

Western Electric CompanyWestrexWestern Electric Manufacturing Company
The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture.
It became the mainstay of American telephone service well into the 1950s, and was followed by the model 500 telephone starting in 1950, which became the most extensively produced telephone model in the industry's history.

Model 5302 telephone

type 5302
This program commenced in 1955, and the converted set was labeled as the model 5302 telephone.
The model 5302 telephone was introduced in 1955 by Western Electric as a look-alike product to the 500-type telephone to meet the increasing post-World War II demand for a modernized telephone, while reusing existing component supplies from the older model 302 telephone.

Telephone

phonetelephonesLocal Telephone Service
The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture.
After World War II, the telephone networks saw rapid expansion and more efficient telephone sets, such as the model 500 telephone in the United States, were developed that permitted larger local networks centered around central offices.

Henry Dreyfuss

DreyfussDreyfuss Associates
The model 500 line was designed by the firm of industrial designer Henry Dreyfuss, the product of several years of research and testing in collaboration with Bell Laboratories and Western Electric.
Bell System telephones: Western Electric 500-series desk and wall telephones (1949 - 1972), Princess telephone (1959), Model 1500 10 digit touchtone (1963), Model 2500 12-digit touchtone (1968–present), and the Trimline telephone (1965–present)

Push-button telephone

10- or 12-button touch-tone telephonespush-buttonpush-button dialing
In the 1960s, after the introduction of touch-tone service in November 1963 in various locations of the telephone network, the basic 500-type chassis was retrofitted with a push-button keypad, along with a new housing and faceplate, creating the model 1500 for the 10-button version and in 1968 the model 2500, having 12 keys.
This phone, the Western Electric 1500, had only ten buttons.

Breakup of the Bell System

breakup of AT&Tdivestiturebreakup
The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture. In 1983, after the court ordered the Bell System divestiture, AT&T started selling telephone sets outright to the public through its newly created American Bell division.

Asterisk

*asterisksstar
The model 2500 telephone, introduced in 1968, added the * and # keys, and is still produced by several manufacturers.

Number sign

#hashhash symbol
The model 2500 telephone, introduced in 1968, added the * and # keys, and is still produced by several manufacturers.

Industrial design

industrial designerindustrialdesign
The model 500 line was designed by the firm of industrial designer Henry Dreyfuss, the product of several years of research and testing in collaboration with Bell Laboratories and Western Electric.

Local loop

subscriber lineloopsubscriber loop
This efficiency permitted the new model to be used on long rural loops, which previously required special sets with local batteries to power the transmitter, not just on urban short loops, because it contained a self-adjusting gain control.

Bell System

BellBell Operating CompaniesBell Telephone
The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture.

Modular connector

8P8C8P8C modular connector4P4C
The 1970s brought the conversion to modular connector technology, replacing the hard-wired cords with cords terminated on both ends with 4P4C connectors for the handset cord, and 6P4C plugs for the line cord.

Design Line telephone

Mickey Mouse phone
After consumers started buying telephones from other manufacturers, in the wake of legal developments not favoring AT&T's ban against third-party equipment, AT&T changed its policy for the Design Line telephone series by selling customers the telephone housing but retaining ownership of the electrical components, so customers were still required to pay AT&T a monthly leasing fee.

AT&T Information Systems

American BellAT&T-Information Systemsinformally referred to as the "Death Star
In 1983, after the court ordered the Bell System divestiture, AT&T started selling telephone sets outright to the public through its newly created American Bell division.

Offshoring

offshoreoffshoredoff-shore
AT&T closed its USA consumer telephone manufacturing plants in 1986, and moved production offshore to Singapore, China, and Thailand, and in the 1990s to Mexico; this let them produce telephones at lower cost.

Keypad

keyboardkeypadsnumeric keypad
The earliest experimental touch-tone phones used the original Dreyfuss design almost unchanged; the keypad, in varying layouts, was placed in a roundel in the dial opening, with the subscriber number label in a small window below.

Payphone

pay phonepayphonespublic telephone
The G handset remains the standard handset on many phones, including public payphones.

Pulse dialing

dial pulsepulse diallingpulse dial
The most complex internal part was the rotary dial mechanism, an assembly of gears, cams, springs, and electrical contacts which mechanically generated a timed train of line loop-break pulses when the dial finger wheel was released after rotation.

Solenoid

solenoidselectromechanical solenoidmagnetizing current loop
The ringer was a mechanical bell consisting of two bell gongs of slightly different dimensions to produce different pitches and a striker between them driven by a solenoid; when the solenoid was energized by AC ringing current, typically about at, it struck the two gongs alternately, producing a distinctive effect of two superimposed sounds.

AC power

reactive powerACreal power
The ringer was a mechanical bell consisting of two bell gongs of slightly different dimensions to produce different pitches and a striker between them driven by a solenoid; when the solenoid was energized by AC ringing current, typically about at, it struck the two gongs alternately, producing a distinctive effect of two superimposed sounds.

Autovon

Automatic Voice Networkmultilevelmultilevel precedence and preemption
Standard touch-tone telephones generate twelve DTMF signals in a grid of three columns and four rows of buttons, while some special purpose telephones are equipped with a fourth column of key for the A,B,C and D DTMF signals for service priorities in the AUTOVON system.

ITT Inc.

ITTKoniITT Corporation
Beginning in the early 1950s, 500-style phones were also made under license by ITT Kellogg (now Cortelco), who continued manufacturing the original rotary design, marketed as the Cortelco ITT-500AS (desk phone) and Cortelco ITT-554AS (wall phone), until discontinuation on January 1, 2007.

Kellogg Switchboard & Supply Company

ITT KelloggKellogg-ITT RelaymaticMilo G. Kellogg
Beginning in the early 1950s, 500-style phones were also made under license by ITT Kellogg (now Cortelco), who continued manufacturing the original rotary design, marketed as the Cortelco ITT-500AS (desk phone) and Cortelco ITT-554AS (wall phone), until discontinuation on January 1, 2007.

Nortel

Nortel NetworksNorthern ElectricNorthern Telecom
The design was also produced in Canada by Northern Electric, which eventually became Northern Telecom.