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A typical volume of Bell System Practices from the 1970s. The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories. [1]
A Panasonic answering machine with a dual compact cassette tape drive to record and replay messages. An answering machine, answerphone, or message machine, also known as telephone messaging machine (or TAM) in the UK and some Commonwealth countries, ansaphone or ansafone (from a trade name), or telephone answering device (TAD), is used for answering telephone calls and recording callers' messages.
An answering machine is a device for automatically answering telephone calls and recording messages left by callers. Answering Machine may also refer to: Music
AT&T Merlin five-button telephone (voice terminal) manufactured in early 1980. AT&T Merlin is a corporate telephone system by American Telephone and Telegraph (AT&T) that was introduced in late 1983, when it was branded American Bell Merlin. After the breakup of the Bell System in 1984, it was rebranded and later also supplied by Lucent and Avaya.
AT&T developed a system called 1A Voice Storage System to support custom services including voicemail for the public telephone system. [15] It worked in conjunction with the companies 1A ESS and 5ESS systems. Development started in mid-1976, [16] with first deployment in early 1979. Friendly user service started in March 1980.
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2007 Toyota Yaris hatchback owner's manual 1919 Ford Motor Company car and truck operating manual. An owner's manual (also called an instruction manual or a user guide) is an instructional book or booklet that is supplied with almost all technologically advanced consumer products such as vehicles, home appliances and computer peripherals.
AT&T Long Distance was the primary customer for the switch. Driving development from the customer's perspective was AT&T VP Billy Oliver. [4] Previous tandem switching systems, primarily the No. 4 Crossbar switch, used analog voice signaling. The decision to switch in a digital voice format was controversial at the time, both from a technical ...