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dual-signalling telephone

См. также в других словарях:

  • R2 signalling — R2[1] is a 1950s and 1970s era channel associated signalling signalling protocol used outside of the former Bell System to convey information along a telephone trunk between two telephone switches in order to establish a single telephone call… …   Wikipedia

  • GPO telephones — The United Kingdom s General Post Office (GPO) had a number of telephones that were provided by them for connection to their exchanges. Until 1982 the GPO had a monopoly on the provision of all telephones within the UK and so the range was… …   Wikipedia

  • GTD-5 EAX — The GTD 5 EAX (General Telephone Digital Number 5 Electronic Automatic Exchange) is the Class 5 telephone switch developed by GTE Automatic Electric Laboratories. This digital central office telephone circuit switching system is used in the… …   Wikipedia

  • In-band signaling — In telecommunications, in band signaling is the sending of metadata and control information in the same band, on the same channel, as used for data.TelephoneFor example, when dialing a modern telephone, the telephone number is encoded and… …   Wikipedia

  • Rotary dial — A German Fe TAp 615, (R g) a widespread rotary dial telephone of the 1960s to the 1980s The rotary dial is a device mounted on or in a telephone or switchboard that is designed to send electrical pulses, known as pulse dialing, corresponding to… …   Wikipedia

  • Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …   Wikipedia

  • Disconnect supervision — is a term in telephony describing signaling between the telephone exchange and a connected party used to indicate that the connected call is being disconnected. For example the called party may indicate to the telephone exchange that the call is… …   Wikipedia

  • Number Five Crossbar Switching System — The Number Five Crossbar Switching System or 5XB switch, designed by Bell Labs and made by Western Electric, was in use in Bell System telephone exchanges from 1948 to the 1980s. Its principal use was as a Class 5 telephone switch, though… …   Wikipedia

  • List of device bit rates — This is a list of device bit rates, or physical layer information rates, net bit rates, useful bit rates, peak bit rates or digital bandwidth capacity, at which digital interfaces of computer peripheral equipment and network devices can… …   Wikipedia

  • H.323 — is an umbrella Recommendation from the ITU Telecommunication Standardization Sector (ITU T) that defines the protocols to provide audio visual communication sessions on any packet network.It is widely implemented by voice and videoconferencing… …   Wikipedia

  • ICE 1 — ICE 1 Manufacturer various Constructed 1989 to 1993 Refurbishment 2005 to 2008 …   Wikipedia

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