- toll-switching center
English-Russian dictionary of telecommunications and their abbreviations. A.V. Alexandrov.. 2004.
toll-switching center
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Toll switching trunk — In telecommunication, a toll switching trunk is a trunk connecting one or more end offices to a toll center as the first stage of concentration for intertoll or long distance traffic. Operator assistance or participation may be an optional… … Wikipedia
Toll-free telephone number — A toll free, Freecall, Freephone, or 800 number is a special telephone number, in that the called party is charged the cost of the calls by the telephone carrier, instead of the calling party. The cost of the call to the called party is usually… … Wikipedia
toll office — A center for switching toll calls … IT glossary of terms, acronyms and abbreviations
Network switching subsystem — (NSS) (or GSM core network) is the component of a GSM system that carries out call switching and mobility management functions for mobile phones roaming on the network of base stations. It is owned and deployed by mobile phone operators and… … Wikipedia
Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… … Wikipedia
Direct distance dialing — (DDD) or direct dial is a telecommunications term for a network provided service feature in which a call originator may, without operator assistance, call any other user outside the local calling area. DDD requires more digits in the number… … Wikipedia
Class 4 telephone switch — A Class 4, or Tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the Public Switched Telephone Network. A Class 4 switch… … Wikipedia
List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… … Wikipedia
United World Telecom — is a leading switch based telecommunications service provider, located in Florida, USA, serving retail, wholesale, and corporate customers worldwide. Established in 1996, United World Telecom has rapidly expanded its global presence in the last… … Wikipedia
Trunking — This is about the network design strategies; for riding in auto cargo space, see Trunking (auto), and for the UK term for electrical wireways, see Electrical conduit#Trunking. Trunking is a concept in modern communications by which a… … Wikipedia
DUATS — DUATS, or Direct User Access Terminal Service is a weather information and flight plan processing service contracted by the Federal Aviation Administration (FAA) for use by United States civil pilots and other authorized users. The DUAT Service… … Wikipedia
