- trunk junctor
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соединительная линия между городской и междугородной станциями
Англо-русский словарь технических терминов. 2005.
trunk junctor
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Junctor — A junctor is a circuit used in analog telephone exchanges, including the Number One Crossbar Switching System, Number Five Crossbar Switching System, Panel switch, 1ESS switch and other switches. In early electromechanical switches including… … Wikipedia
1ESS switch — The Number One Electronic Switching System, the first large scale Stored Program Control (SPC) telephone exchange or Electronic Switching System in the Bell System, was introduced in Succasunna, New Jersey, in May 1965[1]. The switching fabric… … 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
Panel switch — The panel switching system was an early type of automatic telephone exchange, first put into urban service by the Bell System in the 1920s and removed during the 1970s. The Panel and Rotary systems were developed in parallel by Bell Labs before… … Wikipedia
Number One Crossbar Switching System — The Number One Crossbar Switching System, or 1XB switch, was the primary urban local telephone exchange design used by the Bell System in the mid 20th century. Its switch fabric topology was based on the earlier urban panel switch system, which,… … Wikipedia
Cord circuit — In telecommunication, a cord circuit is a switchboard circuit in which a plug terminated cord is used to establish connections manually between user lines or between trunks and user lines. A number of cord circuits are furnished as part of the… … Wikipedia
Permanent signal — (PS) in US telephony jargon, or Permanent Loop in British usage, is a condition in which a POTS line is off hook without connection for an extended period of time. This is indicated in modern switches by the silent termination after the off hook… … Wikipedia
Automatic Message Accounting — (AMA) provides detail billing for telephone calls. When Direct Distance Dialing (DDD) was introduced in the USA, message registers no longer sufficed for dialed telephone calls. The need to record the time and phone number of each long distance… … Wikipedia
