electronic key telephone system

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• Key telephone system — A key system or key telephone system is a multiline telephone system typically used in small office environments.Key systems are noted for their expandability and having individual line selection buttons for each connected phone line, however… …   Wikipedia

• Business 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 …   Wikipedia

• telephone — 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.… …   Universalium

• Electronic voting — Election technology Certification of voting machines Independent Testing Authority (ITA) NVLAP VVSG End to end auditable voting systems Help America Vote Act Independent verific …   Wikipedia

• Electronic organ — Yamaha GX1, a synthesizer organ in 1970s WERSI Scala, an …   Wikipedia

• Telephone tapping — Wiretap redirects here. For the radio program, see WireTap (radio program). Telephone tapping (also wire tapping or wiretapping in American English) is the monitoring of telephone and Internet conversations by a third party, often by covert means …   Wikipedia

• 1A2 Key System — The 1A2 Key System is an analog multiline business key telephone system. Unlike more modern multiline systems, every telephone line serving a particular phone is wired into that phone, and electromechanical switches (the keys ) switch the lines… …   Wikipedia

• Electronic engineering — is a discipline dealing with the behavior and effects of electrons (as in electron tubes and transistors) and with electronic devices, systems, or equipment.The term now also covers a large part of electrical engineering degree courses as studied …   Wikipedia

• Telephone numbering plan — Area Code redirects here. For the song by Ludacris, see Area Codes (song). A telephone numbering plan is a type of numbering scheme used in telecommunications to allocate telephone numbers to subscribers and to route telephone calls in a… …   Wikipedia

• Telephone card — A telephone card, calling card or phone card for short, is a small card, usually resembling a credit card, used to pay for telephone services. Such cards can either employ prepaid credit system or credit card style system of credit. The exact… …   Wikipedia

• Telephone hybrid — A telephone hybrid is a relatively simple electronic device used to connect telephone line to studio audio circuits. These are normally used in radio stations (and sometimes TV stations and broadcast networks) to connect callers into the airchain …   Wikipedia