Search results
Results from the WOW.Com Content Network
Regulatory changes brought about by the Telecommunications Act of 1996 allowed the Baby Bells to merge with each other or with non-Bell companies. Subsequently, a series of mergers and divestments has left six companies owning parts of the former Bell System as of 2024. In 1996, Bell Atlantic acquired NYNEX; In 1997, SBC acquired Pacific Telesis
The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company (AT&T), that dominated the telephone services industry in North America for over 100 years from its creation in 1877 until its antitrust breakup in 1983.
Bell System installations typically had alarm bells, gongs, or chimes to announce alarms calling attention to a failed switch element. A trouble reporting card system was connected to switch common control elements. These trouble reporting systems punctured cardboard cards with a code that logged the nature of a failure.
The first automatic intercept systems used rotating magnetic drums containing multiple recorded phrases, with a computer or mechanical control system playing phrases in the proper sequence. Initially, the caller was given the option to remain on the line for a live operator after the announcement was completed; this has since been removed.
The Panel Machine Switching System is a type of automatic telephone exchange for urban service that was used in the Bell System in the United States for seven decades. The first semi-mechanical types of this design were installed in 1915 in Newark, New Jersey , and the last were retired in the same city in 1983.
Bell's "Madras System" was so named because it originated at the Military Male Orphan Asylum, Egmore, near Madras. Gladman describes Bell's system from notes taken from Bell's Manual which had been published by the National Society two years after Bell's death, in 1832. "After observing children in a native school, seated on the ground, and ...
The T-carrier is a hardware specification for carrying multiple time-division multiplexed (TDM) telecommunications channels over a single four-wire transmission circuit. It was developed by AT&T at Bell Laboratories ca. 1957 and first employed by 1962 for long-haul pulse-code modulation (PCM) digital voice transmission with the D1 channel bank.
In 1929, the Bell System sought to improve the appearance of their telephone apparatus, particularly in subscriber's homes and offices. After a design contest failed to produce useable ideas, [ 26 ] by year-end engineers had redesigned the desk-top handset mounting into a new, wider, elliptical shape that also recessed the casing of the dial ...