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

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...

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

was not encrypted. The telephone switches used were initially a 4 wire version of Number Five Crossbar Switching System, replaced in the early 1970s after...

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...

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

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...

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...

switch in the United States, and the Rotary system outside the US, and by the late 1930s by the crossbar switch, and the electronic switching systems...

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

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

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...

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...

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...

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...

offered a register-controlled version of a motor-uniselector system in favour of a crossbar system from LM Ericsson. Suddenly the rules had changed and the...

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...

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

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...

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...

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

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...

one of multiple options retained for compatibility in the #5 Crossbar switch, a later system that served as the platform for the initial DTMF push-button...

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...

automatic switching using step-by-step exchanges until after WWII. From 1957 onwards, P&T began to roll out more modern crossbar switches primarily using...