Electronic Switching System
- Electronic Switching System
In telecommunications, an electronic switching system (ESS) is:
* A telephone exchange based on the principles of time-division multiplexing of digitized analog signals. An electronic switching system digitizes analog signals from subscriber loops, and interconnects them by assigning the digitized signals to the appropriate time slots. It may also interconnect digital data or voice circuits.
* A switching system with major devices constructed of semiconductor components. A semi-electronic switching system that had reed relays or crossbar matrices for its talk paths, as well as semiconductor components, was also considered to be an ESS in the 20th Century.
"Source:" from Federal Standard 1037C and from MIL-STD-188
In the late 20th Century most telephone exchanges were eliminated that were not time-division ones, so interest in this distinction became primarily historical. When the term is still used, it means approximately the same thing as Stored Program Control exchange
ee also
*List of telephone switches
*Stored Program Control exchange
Wikimedia Foundation.
2010.
Look at other dictionaries:
electronic switching system — elektroninė perjungimo sistema statusas T sritis automatika atitikmenys: angl. electronic switching system vok. elektronisches Vermittlungssystem, n rus. электронная коммутационная система, f pranc. système de commutation électronique, m … Automatikos terminų žodynas
electronic switching system — (ESS) A system using computer like operations to switch telephone calls … IT glossary of terms, acronyms and abbreviations
quasi-electronic switching system — kvazielektroninė perjungimo sistema statusas T sritis automatika atitikmenys: angl. quasi electronic switching system vok. Quasielektronikvermittlungsanlage, f rus. квазиэлектронная система коммутации, f pranc. système de commutation quasi… … Automatikos terminų žodynas
electronic ignition system — An ignition system using electronic switching devices to assist or eliminate the mechanical breaker points. There are three basic electronic ignitions: contact controlled (the breaker points are retained but merely serve to trigger a transistor… … Dictionary of automotive terms
electronic switching — electronic switching, an automatic system of switching electric circuits by means of electronic components, especially in telephone circuitry: »Electronic switching…allows a customer to transfer incoming calls automatically and to connect… … Useful english dictionary
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
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
Switching Control Center System — The Switching Control Center System was an Operations Support System developed by Bell Laboratories and deployed during the early 1970s. This computer system was first based on the PDP 11 product line from Digital Equipment Corporation and used… … Wikipedia
electronic automatic exchange — (EAX) Non AT&T term to refer to an electronic central office. AT&T s term is electronic Switching System (ESS) … IT glossary of terms, acronyms and abbreviations
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
