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Collection of electronic switches arranged in a matrix
telecommunications, a crossbar switch (cross-point switch, matrix switch) is a collection of switches arranged in a matrix configuration. A crossbar switch has multiple
Crossbar_switch
Strowger switches, which were large, expensive banks of electromechanical relays. Later the Strowger switches were replaced by crossbar switches, which
Nonblocking minimal spanning switch
Nonblocking_minimal_spanning_switch
Telecommunication system for establishing telephone calls
trunk circuits between switches. In Bell System trunks, it was common to use 20 pulse-per-second between crossbar switches and crossbar tandems. This was twice
Telephone_exchange
The Number Five Crossbar Switching System (5XB switch) is a telephone switch for telephone exchanges designed by Bell Labs and manufactured by Western
Number Five Crossbar Switching System
Number_Five_Crossbar_Switching_System
Kind of multistage circuit-switching network
ingress stage crossbar switches; each ingress stage crossbar switch has m outlets; and there are m middle stage crossbar switches. Circuit switching arranges
Clos_network
Telephone switching system
Western Electric for long-distance switching. It was introduced in Chicago in January 1976, to replace the 4A crossbar switch. The last of the 145 systems in
No. 4 Electronic Switching System
No._4_Electronic_Switching_System
mid-20th century. Its switch fabric used the electromechanical crossbar switch to implement the topology of the panel switching system of the 1920s. The
Number One Crossbar Switching System
Number_One_Crossbar_Switching_System
Business Phone 128i Business Phone 250 CP-400 (crossbar) CPP (Media Gateway) MD110 MX-ONE MX-ONE Telephony Switch (TSW) MX-ONE Telephony Server (TS) Rurax EXS
List_of_telephone_switches
Type of U.S. central office telephone switch
switches in the Bell System during the 1950s and 1960s used crossbar switches, such as the Crossbar Tandem (XBT) variant of the Number One Crossbar Switching
Class-4_telephone_switch
Open source circuitry hardware
(i.e. the classic bus system), hierarchical, or even switched fabrics such as crossbar switches. In the more exotic topologies, Wishbone requires a bus
Wishbone_(computer_bus)
Topics referred to by the same term
preferable. Crossbar, the horizontal member of various sports goals Crossbar, a horizontal member of an electricity pylon In electronics, crossbar switch, a switch
Crossbar
Electromechanical telephone switch
Panel 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
Strowger_switch
Electrical component that can break an electrical circuit
Centrifugal switch Company switch Crossbar switch Dead man's switch Fireman's switch Hall-effect switch Inertial switch Isolator switch Key switch Kill switch Latching
Switch
Interconnect Network Multistage interconnect Network Crossbar switch connections In crossbar switch, there is a dedicated path from one processor to other
Multistage interconnection networks
Multistage_interconnection_networks
Series of network switches
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
Cisco_Nexus_switches
Telecommunications switch by Northern Electric
generation of systems, the SP-1 was an analog switch that used a special form of mechanical relay (Minibar crossbar switch) to provide the voice connections. The
SP-1_switch
Equal sharing of all resources by multiple identical processors
interconnected using buses, crossbar switches or on-chip mesh networks. The bottleneck in the scalability of SMP using buses or crossbar switches is the bandwidth
Symmetric_multiprocessing
Electrically operated switch
One Electronic Switching System (1ESS) crossbar switch and certain other high-reliability designs, the reed switches are always switched "dry" (without
Relay
Early type of computer memory
by T. L. Dimond at Bell Laboratories for Bell's #5 Crossbar Switch, a type of early telephone switch. Large-diameter magnetic ferrite toroidal rings with
Dimond_ring
Multi-core microprocessor microarchitecture
were pushing for a crossbar switch, and the way the bus is designed, you could actually pull out the EIB and put in a crossbar switch if you were willing
Cell_(processor)
Telephone area code history of North America
established. The introduction of the first Western Electric No. 4 Crossbar Switching System in Philadelphia to commercial service, in August 1943, automated
Original North American area codes
Original_North_American_area_codes
Active electronic circuit controlling the current through a load
electromechanical crossbar switches. Thus the term 'switched' is applied to telecommunications networks, and signifies a network that is circuit switched, providing
Electronic_switch
Electronic component wiring technique
component assembly technique that was invented to wire telephone crossbar switches, and later adapted to construct electronic circuit boards. Electronic
Wire_wrap
Telephone switch that interconnects telephone circuits
electronic switching systems in the 1960s were not entirely digital in nature, but used reed relay-operated metallic paths or crossbar switches operated
Electronic_switching_system
Type of U.S. central office telephone switch
crossbar systems, Panel switches, and Strowger-type step-by-step systems. The DDD program involved installations of large numbers of new 5XB crossbar
Class-5_telephone_switch
Programming paradigm in which many processes are executed simultaneously
including via shared (either multiported or multiplexed) memory, a crossbar switch, a shared bus or an interconnect network of a myriad of topologies
Parallel_computing
generation of crossbar switches which were replacing the Step-by-Step switches and Panel switches of the first generation of automatic switching. First employed
Marker_(telecommunications)
Electromagnetic switching device
others performing logic or memory functions. Most reed relays in the crossbar switching systems of the 1940s through the 1970s were packaged in groups of
Reed_relay
Device for sending telephone numbers
dialing) Crossbar switch Dial tone Direct distance dialing (DDD) History of the telephone Phoneword Single-frequency signaling Stepping switch Telephone
Rotary_dial
Series of transistor–transistor logic integrated circuits
Philips. 1996. Retrieved 2023-03-22. CBT (5-V) and CBTLV (3.3-V) Bus Switches. Texas Instruments. 1998. "SN74AVCH8T245 8-Bit Dual-Supply Bus Transceiver
7400-series integrated circuits
7400-series_integrated_circuits
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
Telecommunications in the Republic of Ireland
Telecommunications_in_the_Republic_of_Ireland
Electronics in music and computer keyboards
scan the keyboard as well, providing further savings. Charlieplexing Crossbar switch Diode matrix Polyphony (instrument) Dave Dribin. "Keyboard Matrix Help"
Keyboard_matrix_circuit
Array of logic gates that are reprogrammable
considerably even among designs with the same amount of logic. For example, a crossbar switch requires much more routing than a systolic array with the same gate
Field-programmable_gate_array
Network topology in which nodes are interconnected by network switches
Switched fabric or switching fabric is a network topology in which network nodes interconnect via one or more network switches (particularly crossbar
Switched_fabric
Solid-state electrically operated switch also used as an amplifier
used transistors in telecommunications equipment in the No. 4A Toll Crossbar Switching System in 1953, for selecting trunk circuits from routing information
Transistor
arbitration at all, at the cost of sending each packet across the crossbar twice. Load-balanced switches are a subject of research for large routers scaled past
Load-balanced_switch
North American local directory assistance number
York City, San Francisco, and other large cities where panel and crossbar switching equipment installed by the Bell System was prevalent. However, in
411_(telephone_number)
Spacecraft communications network
the software. A SpaceWire router is usually a crossbar switch-type device, operating in wormhole switching mode. This also may limit the speed of the communication
SpaceWire
Form of non-volatile memory used in computers and other electronic devices
in the early 1940s, the Dimond Ring Translator was used in the #5 Crossbar Switch, and TXE telephone exchanges. Dimond Ring was the basis for most later
Read-only_memory
network switch.[citation needed] The future is moving to larger arrays of inputs and outputs needed in a very small space. Clos switch Crossbar switch Picton
Crossover_switch
Telephone which has buttons or keys for dialing
and 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
Push-button_telephone
Crossover switch Crossbar switch Clos network a non blocking crossover switch that needs fewer than N² switches Nonblocking minimal spanning switch and signal
Banyan_switch
Data transfer channel connecting parts of a computer
mastering Communication endpoint Computer port (hardware) Control bus Crossbar switch External Bus Interface (EBI) Front-side bus (FSB) Harvard architecture
Bus_(computing)
Computer programming paradigm
crossbar switch matrix (4 or 2 segments), while high-end models deploy huge amounts of memory (actually up to 512 MB) with a slightly slower crossbar
Stream_processing
conditions made this a real problem, switch staff would open the cable, or paper the off-normal contacts of the crossbar switch, or block the line relay from
Permanent_signal
telephone call. Some American exchange designs, for example, of the No. 1 Crossbar switch used originating senders and terminating senders. The corresponding
Sender_(telephony)
Communication connection between two nodes or endpoints
circuits, as opposed to other network topologies such as buses or crossbar switches which can connect many communications devices. Point-to-point is sometimes
Point-to-point (telecommunications)
Point-to-point_(telecommunications)
Device featuring a number of jacks for connecting and routing circuits
specialized devices like crossbar switches. Switching equipment may be electronic, mechanical, or electro-mechanical. Some switcher hardware can be controlled
Patch_panel
Multidisciplinary field of engineering
The Strowger switch, the Panel switch, and similar devices were widely used in early automated telephone exchanges. Crossbar switches were first widely
Electromechanics
Swedish electrical engineer (1911–1988)
engineering, especially in the design of the modern crossbar switch used for telephone switching. Jacobæus graduated from the Royal Institute of Technology
Christian_Jacobæus
Abstract devices built up of a fixed number of "wires"
them to construct switching networks for computer hardware, replacing both buses and the faster, but more expensive, crossbar switches. Since the 2000s
Sorting_network
Type of read-only memory
invented by T. L. Dimond in 1945 at Bell Laboratories for the No. 5 Crossbar switch to assist in the automatic message accounting (AMA) equipment. Later
Transformer_read-only_storage
American worldwide manufacturing company
equipment according to ITT designs, including the (1960s) Pentaconta crossbar switch and (1970s) Metaconta D, L, and 10c Stored Program Control exchanges
ITT_Inc.
Area codes that serve the southern San Francisco Bay Area, California
eight Western Electric Crossbar switches, at least one Number 1 and mostly Number 5. There was a Western Electric 4A Crossbar that took up two floors
Area_codes_408_and_669
Use of nanotechnology in electronic components
largely relied on the formation of transistors. However, research into crossbar switch based electronics have offered an alternative using reconfigurable
Nanoelectronics
Series of pioneering microprocessors from the 1980s
DS-Link support chips were also developed, including the C104 32-way crossbar switch, and the C101 link adapter. Long delays in the T9000's development
Transputer
as a small Class 5 crossbar switch for local use in rural areas. In the late 1970s, Western Electric's number 3 Electronic Switching System (ESS) was installed
Community_dial_office
128 single-node systems via a high-speed, low-latency IXS (Internode Crossbar Switch). The peak performance of the SX-6 series vector processors is 8 GFLOPS
NEC_SX-6
ratings, higher frequency capabilities, lower "on" resistances in analog switches, etc.). See List of 4000-series integrated circuits. Conversely, the 4000-series
List of 7400-series integrated circuits
List_of_7400-series_integrated_circuits
Former internal U.S. military telephone system
carrying was not encrypted. The telephone switches used were initially a 4 wire version of Number Five Crossbar Switching System, replaced in the early 1970s
Autovon
Form of network configuration
Cube-connected cycles Nonblocking minimal spanning switch Banyan switch Delta network Fat tree Crossbar switch Network coding Lawrie, Duncan H. (December 1975)
Omega_network
Router architecture
shared buses, the eventual approach was to adapt the crossbar switch model from telephone switches, in which every forwarding engine had a hardware path
Data_plane
Computer series
application-specific integrated circuit (ASIC), referred to as Xbow, a dynamic crossbar switch that connects the XIO ports to the hub. One of the ports is used for
SGI_Octane
Machine
clock, interrupt, and process control messaging among the CMs A 16x16 crossbar switch – used to connect the 16 CMs on one side and 16 banks of shared memory
C.mmp
the ARF/ARM family of crossbar switches. The design is modular with an APZ dual processor running in sync mode, an APT switching part and an APG I/O part
AXE_telephone_exchange
Swedish telecommunications company
telephones in the 1960s. In 1954, it released the Ericofon. Ericsson crossbar switching equipment was used in telephone administrations in many countries
Ericsson
Reprogrammable computer hardware technology
considerably even among designs with the same amount of logic. For example, a crossbar switch requires much more routing than a systolic array with the same gate
Logic_block
Computer built from mechanical components such as levers and gears
connection box. Early electrically powered computers constructed from switches and relay logic rather than vacuum tubes (thermionic valves) or transistors
Mechanical_computer
Low-power mobile processors
mobile-enhanced northbridge (memory controller, HyperTransport controller, and crossbar switch). Each processor core comes with 1 MiB L2 cache for a total of 2 MiB
AMD_Turion
Telecommunications circuit which can transmit in two directions simultaneously
to circuit switch a telephone call became obsolete when the crossbar switch (a mechanical system) was replaced by 4ESS electronic switches in the 1970s
Two-wire_circuit
Technology for telephone exchanges
such as Strowger, panel, rotary, and crossbar switches were constructed purely from electromechanical switching components with combinational logic control
Stored_program_control
Japanese technology corporation
Computer research and development began in 1954. NEC produced the first crossbar switching system in Japan. It was installed at Nippon Telegraph and Telephone
NEC
arbiter is a circuit used to make decisions which control the crossbar of a high capacity switch fabric in parallel. It was commercialized in the TT1 and TTx
Wavefront_arbiter
Telecommunications research company
Its switching matrix was still electromechanical. Rather than the reed relay matrix of the 1ESS, it used the minibar, a version of the crossbar switch. BNR
Bell-Northern_Research
Research and scientific development company
distance dialing, E-repeater, wire spring relay, and the Number Five Crossbar Switching System. In 1952, William Gardner Pfann revealed the method of zone
Bell_Labs
North American telephone switching technology
evolved from the General Toll Switching Plan of 1929, and gained technical merits by the cutover of a new type of crossbar switching system (No. 4XB) in Philadelphia
Operator_Toll_Dialing
Mainframe computer from DEC
clocked at 62.5 MHz (16 ns cycle time). The system was based around a crossbar switch in the system control unit (SCU), to which the one to four CPUs, two
VAX_9000
Series of supercomputers by IBM
prior to system operation. The chip's processor cores are linked by a crossbar switch to a 32 MB eDRAM L2 cache, operating at half core speed. The L2 cache
IBM_Blue_Gene
Parallel computer sold by Cray Research from 1992 onwards
multiple nodes connected to each other, memory and I/O nodes via an 8×8 crossbar switch. The APP was marketed as a "matrix co-processor" system and required
Cray_APP
Parallel computing memory architecture
bus-based symmetric multiprocessing (SMP) architectures; UMA using crossbar switches; UMA using multistage interconnection networks. In April 2013, the
Uniform_memory_access
Type of integrated circuit
even among designs with the same amount of logic. (For example, a crossbar switch requires much more routing than a systolic array with the same gate
Gate_array
Processors using some version of the MIPS architecture
its multicore processing node which integrates six MIPS64 cores, a crossbar switch memory controller, interconnect direct memory access (DMA) engine,
MIPS_architecture_processors
Technical documentation series
5 Crossbar SWITCHING SYSTEMS 218-000-002 Alphabetical Index - No. 5A Crossbar SWITCHING SYSTEMS 218-000-003 Alphabetical Index - No. 3 Crossbar SWITCHING
Bell_System_Practices
Power ISA-based processor
context switching, quad SIMD floating-point unit, 5D torus chip-to-chip network and 2 GB/s external I/O. The cores are linked by a crossbar switch at half
IBM_A2
each other via a shared L2 or L3 cache, an on-die bus, or an on-die crossbar switch. All the CPU cores on the die share interconnect components with which
History of general-purpose CPUs
History_of_general-purpose_CPUs
Operating system
links. The Elite chip was an 8-way link crossbar switch, used to form the packet-switched network. The switch had limited adaption based on load and priority
Meiko_Scientific
1952 in tone generators for multifrequency signaling of the No. 5 Crossbar switching system in the Englewood, NJ installation, used for the first field
History_of_the_transistor
Number One Crossbar Switching System, Number Five Crossbar Switching System, 1ESS switch and other switches. In early electromechanical switches, a "district
Junctor
Telephone signaling protocol
PCI is 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
Panel_call_indicator
Family of 64-bit Intel microprocessors
pair of 8-ported crossbar switches is needed (adding 64 ns to inter-cell memory accesses), while four such pairs of crossbar switches are needed for the
Itanium
Network technique addressing head-of-line blocking
VOQ mechanism provides throughput at a much higher rate than the crossbar switches without it. There are many algorithms for design and implementation
Virtual_output_queueing
Bus). The backplane was an active backplane and it contained an 8 x 4 crossbar switch (FX/8) that allowed any CE to connect to one of four cache ports, two
Alliant_Computer_Systems
Telecommunication service
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
Direct_distance_dialing
Device that directs incoming phone calls
differing skill sets within customer service representatives. Number Five Crossbar Switching System Communications system Vector directory number Zip tone "Definition
Automatic_call_distributor
Supercomputer family
integrated circuit through a single front-side bus. The Super-Bedrock is a crossbar switch for the processors, the local RAM, the network interface and the I/O
SGI_Altix
system was to use an 8×8 crossbar switch to connect eight custom CMOS CPUs together at high speed. An extra channel on the crossbar allowed it to be connected
Evans_&_Sutherland_ES-1
Family of processor cores
550 MHz, and connects to the surrounding FPGA-fabric through a special crossbar switch, increasing the Virtex-5 FXT family's system performance over 2.6 times
PowerPC_400
Japanese manufacturing company
reconstruction". In 1956, it was the first to produce a 100-line Ericsson-type crossbar-switching systems for commercial use.[citation needed] OKI gradually transformed
Oki_Electric_Industry
Topics referred to by the same term
television show Cross-point screw, or Phillips screw Crossbar switch, also called a cross-point switch Cross Point (album), by Casiopea, 1981 Crosspointe
Cross_Point
Error-detection code for decimal digits
method was also used in North American telephone multi-frequency and crossbar switching systems. The USPS Postal Alpha Numeric Encoding Technique (PLANET)
Two-out-of-five_code
CROSSBAR SWITCH
CROSSBAR SWITCH
Surname or Lastname
English (North Midlands)
English (North Midlands) : perhaps a respelling of Irish Crossan.
Boy/Male
Norse
Dwells at the shrine of the cross.
Surname or Lastname
English
English : topographic name for someone who lived by a stone cross, from Old Norse kross (see Cross 1) + Middle English man.Altered spelling of German Crossmann or Crössmann; the first may be a habitational name from any of several places called Crossen in Saxony, Brandenburg, and East Prussia, or derived from Grossmann. The second is possibly from Middle Low German krÅs, krüs ‘pitcher’, and hence a metonymic occupational name for maker of these; alternatively it may be a metonymic occupational name for a butcher, from Middle High German kroese ‘tripe’.
Surname or Lastname
Catalan
Catalan : occupational name for a maker of crossbows or a soldier armed with a crossbow, from Catalan ballester ‘crossbowman’ or ‘crossbow maker’, an agent derivative of ballesta ‘crossbow’ (Latin ballista ‘(military) catapult’).English and German : occupational name, cognate with 1, from an agent derivative of Middle English, Old French baleste ‘crossbow’.
Surname or Lastname
English
English : variant of Matter.English : probably a metonymic occupational name for a mattress maker or seller, from Middle English, Old French materas, or less likely for a maker of crossbow bolts, spears, and lances, from the Middle English homonym materas.Dutch : variant of Matter 2.
Male
Welsh
Welsh name, possibly UCHDRYD means "crossbeard." In Welsh legend, this is the name of a son of Edwin, lord or king of Tegaingl.
CROSSBAR SWITCH
CROSSBAR SWITCH
Boy/Male
Gujarati, Hindu, Indian, Kannada, Rajput, Tamil
God of Universe
Boy/Male
Tamil
Siddhesh | ஸிதà¯à®¤à¯‡à®·
Lord of the blessed
Girl/Female
Indian, Tamil
Blessed
Female
Serbian
(Serbian ДрагоÑлава): Feminine form of Slavic Dragoslav, DRAGOSLAVA means "precious glory." In use by the Serbians.
Boy/Male
British, English
Heather Meadow
Boy/Male
Indian, Sanskrit
A Mythical Indian Bird Consisdered to Live on Rain Drops; A Poet
Girl/Female
Arabic, German, Punjabi, Turkish
Romantic; Joyful
Female
Russian
(ЯроÑлава) Feminine form of Russian Yaroslav, YAROSLAVA means "spring glory."
Boy/Male
Australian, Greek, Shakespearean
A Centaur
Surname or Lastname
English, Scottish, and northern Irish
English, Scottish, and northern Irish : distinguishing name (Middle English yunge, yonge ‘young’), for the younger of two bearers of the same personal name, usually distinguishing a younger brother or a son. In Middle English this name is often found with the Anglo-Norman French definite article, for example Robert le Yunge.Americanization of a cognate, equivalent, or like-sounding surname in some other language, notably German Jung and Junk, Dutch De Jong, De Jongh and Jong, and French Lejeune and LaJeunesse.assimilated form of French Dion or Guyon.Chinese : see Yang.
CROSSBAR SWITCH
CROSSBAR SWITCH
CROSSBAR SWITCH
CROSSBAR SWITCH
CROSSBAR SWITCH
n.
A crossbow.
n.
A girder.
n.
A crowbar.
n.
A weapon, used in discharging arrows, formed by placing a bow crosswise on a stock.
n.
A middle joist or crossbeam.
n.
See Crossroad.
n.
A crossbeam; a lay of joists.
n.
A beam laid across the bitts, to which the cable is fastened when riding at anchor.
n.
A crossbow. See Arbalest.
n.
A crossbar on a grinding mill spindle to drive the upper stone.
n.
Same as Crossbill.
a.
Secured by, or furnished with, crossbars.
n.
A crossbow.
n.
A crossbar of wood in a shaft, serving as a step.
n.
A crossbow.
n.
A transverse bar or piece, as a bar across a door, or as the iron bar or stock which passes through the shank of an anchor to insure its turning fluke down.
n.
A crossbow.
n.
A crossbow. See Prod, 3.
n.
In vehicles, a swinging crossbar, to the ends of which other crossbars, or whiffletrees, are hung, to equalize the draught when two or three horses are used abreast.
n.
A kind of crowbar.