trunk telephone network
61Boden Fortress — Infobox Military Structure name=Boden Fortress location=Boden, Norrbotten, Sweden caption=Rödberget Fort, part of Boden Fortress, seen from the north. The caponier ditch and the armored turrets are clearly visible, as well as the magnificent view …
62Direct 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… …
63Telephony — In telecommunication, telephony (pronEng|təˈlɛfəni or teh LEH fuh nee) encompasses the general use of equipment to provide voice communication over distances, specifically by connecting telephones to each other.Telephones originally were… …
64Liste der Telekommunikationsstandards — Liste von Standards und Richtlinien aus der Telekommunikation. Inhaltsverzeichnis 1 ETSI 1.1 Nomenklatur 1.1.1 derzeit gültige Nomenklatur 1.1.2 vorherige Nomenklatur …
65Direct inward dialing — (DID), also called direct dial in (DDI) in Europe and Oceania, is a feature offered by telephone companies for use with their customers private branch exchange (PBX) systems. In DID service the telephone company provides one or more trunk lines… …
66Signaling (telecommunications) — In telecommunication, signaling (signalling in British spelling) has the following meanings: the use of signals for controlling communications the information exchange concerning the establishment and control of a telecommunication circuit and… …
67Army Communications and Information Systems (United Kingdom) — The British Army operates a wide range of communications and information systems [ [http://www.army.mod.uk/3512.aspx Royal Signals Equipment] ] . Some of these are specialised military systems, while others are procured off the shelf. They fall… …
68Mobile telephony — Mobile phone tower Mobile telephony is the provision of telephone services to phones which may move around freely rather than stay fixed in one location. Mobile phones connect to a terrestrial cellular network of base stations (cell sites),… …
69Blue box (phreaking) — An early phreaking tool, the blue box is an electronic device that simulates a telephone operator s dialing console. It functions by replicating the tones used to switch long distance calls and using them to route the user s own call, bypassing… …
70Signalling (telecommunications) — In telecommunication, signalling (UK spelling) or signaling (US spelling) has the following meanings: *The use of signals for controlling communications. *In a telecommunications network, the information exchange concerning the establishment and… …
