CompanyQ2031258· pop 17· linked from 724 articlesWestern ElectricSign in to saveengineering and manufacturing companyConnectionsDual-tone multi-frequency signalingEntityIndianapolisEntitytelegraphyEntityvacuum tubeEntitywireless communicationEntityBell LabsEntityInformation AgeEntityNECCompanyHawthorne effectEntitytelephone exchangeEntityITT CorporationCompanyLucentCompanyAT&T CorporationCompanySS EastlandEntityBell SystemEntityRegional Bell Operating CompanyEntityNew York CityCityInternetEntityWorld War IIConceptChicagoEntityCategories1881 mergers and acquisitionsAcademy Award for Technical Achievement winnersAlcatel-LucentAmerican companies disestablished in 1996American companies established in 1869Bell SystemCompanies based in ManhattanCompanies formerly listed on the New York Stock ExchangeDefunct manufacturing companies based in IllinoisDefunct manufacturing companies based in New York CityDefunct telecommunications companies of the United States