The Number Five Crossbar Switching System (5XB switch) is a telephone switch for telephone exchanges designed by Bell Labs and manufactured by Western...

switching system is also called a coordinate switching system. Collections of crossbars can be used to implement multiple layer and blocking switches...

The Number One Crossbar Switching System (1XB), was the primary technology for urban telephone exchanges served by the Bell System in the mid-20th century...

equipment in place. The telephone switches used were initially a 4 wire version of Number Five Crossbar Switching System, replaced in the early 1970s after...

automatic number identification had been retrofitted to nearly all step-by-step and crossbar switches in the Bell System. Electronic switching systems gradually...

the Number One Crossbar Switching System, Number Five Crossbar Switching System, 1ESS switch and other switches. In early electromechanical switches, a...

customer service representatives Number Five Crossbar Switching System Communications system Vector directory number Zip tone "Definition of: ACD". Encyclopedia...

too. E10-Five E10B adapted for the North American environment as a class-5 switch. E10S satellite switching unit. E10-MSC mobile switching center for...

repeats, in molecular genetics Line Concentration Ratio; see Number Five Crossbar Switching System Low Chip Rate, one of the two transmission modes of UMTS-TDD...

of new crossbar switching systems for toll-dialing in New York and Chicago, which added new technology to the No. 4 Crossbar Switching System, first installed...

of multistage circuit-switching network which represents a theoretical idealization of practical, multistage switching systems. It was invented by Edson...

distance dialing, E-repeater, wire spring relay, and the Number Five Crossbar Switching System. In 1952, William Gardner Pfann revealed the method of zone...

employees. The Strowger system was widely used until the development of the more reliable crossbar switch, an electromechanical switch with a matrix of vertical...

well as five crossbar switch fabric modules at the rear. Beside the Nexus 7000 there are also other models in the Nexus range. All switches in the Nexus...

was also used in North American telephone multi-frequency and crossbar switching systems. The USPS Postal Alpha Numeric Encoding Technique (PLANET) uses...

1970s, a result of the introduction of NEC crossbar-based toll exchanges and their ability to perform number translation. Upper Hutt was the first exchange...

The Panel Machine Switching System is a type of automatic telephone exchange for urban service that was used in the Bell System in the United States for...

by the late 1940s such technology was field-tested in a No. 5 Crossbar switching system in Pennsylvania. The technology at that time proved unreliable...

variation with longer side crossbars, where all conductors are hung with a V-shaped insulator and one with shorter side crossbar, where only the middle bundle...

the Bell System and used the panel switch, or later the Number One Crossbar Switching System (1XB), or the Number 5 Crossbar Switching Systems rather than...

systems that rarely have problems. For instance, the Western Electric crossbar systems had failure rates of two hours per forty years, and therefore were...

ideal after switching over its entire resistance range, creating hysteresis, also called the "hard-switching regime". Another kind of switch would have...

reed-switch with a matrix similar to the AE EAX. The ESC, was not however Stored Program Control and had more in common with crossbar switching than other...

and it contained an 8 x 4 crossbar switch (FX/8) that allowed any CE to connect to one of four cache ports, two on each System Cache. Total cache bandwidth...

returned to using area code 415. The No. 4 Crossbar switching system had been introduced in the early 1940s to switch four-wire circuits and replace the incoming...

the Number One Electronic Switching System (1ESS) crossbar switch and certain other high-reliability designs, the reed switches are always switched "dry"...

Strowger and Crossbar PABXs were available. The family of IBM 1750, 2750 and 3750 Switching Systems was developed from the IBM 1800. Each system included...

combinations of switching equipment such as MG (crossbar exchange - marker group), SG (step-by-step exchange - step group), CG (electronic switching system - control...

contention Bus error Bus mastering Communication endpoint Control bus Crossbar switch Memory address Front-side bus (FSB) External Bus Interface (EBI) Harvard...

of the nation's first large panel switch in Omaha, the Bell operating companies began to install automated switching equipment. Los Angeles and San Francisco...