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- Stored_program_control abstract "Stored program control (SPC) is a telecommunications technology used for telephone exchanges controlled by a computer program stored in the memory of the switching system. SPC was the enabling technology of electronic switching systems (ESS) developed in the Bell System in the 1950s.Early exchanges such as Strowger, panel, rotary, and crossbar switches were constructed purely from electromechanical switching components with analog control electronics, and had no computer software control. Stored program control was invented by Bell Labs scientist Erna Schneider Hoover in 1954 who reasoned that computer software could control the connection of telephone calls.SPC was introduced in electronic switching systems in the 1960s. The 101ESS PBX was a transitional switching system in the Bell System to provide expanded services to business customers that were otherwise still served by an electromechanical central office switch, while the Western Electric 1ESS switch and the AXE telephone exchange by Ericsson were large-scale systems in the public switched telephone network. SPC enabled sophisticated calling features. As SPC exchanges evolved, reliability and versatility increased. The addition of time-division multiplexing (TDM) decreased subsystem sizes and dramatically increased the capacity of the telephone network. By the 1980s, SPC technology dominated the telecommunications industry.".
- Stored_program_control wikiPageID "7092252".
- Stored_program_control wikiPageLength "10734".
- Stored_program_control wikiPageOutDegree "30".
- Stored_program_control wikiPageRevisionID "700647811".
- Stored_program_control wikiPageWikiLink 1ESS_switch.
- Stored_program_control wikiPageWikiLink AXE_telephone_exchange.
- Stored_program_control wikiPageWikiLink Bell_Labs.
- Stored_program_control wikiPageWikiLink Bell_System.
- Stored_program_control wikiPageWikiLink Business_telephone_system.
- Stored_program_control wikiPageWikiLink Call_volume_(telecommunications).
- Stored_program_control wikiPageWikiLink Category:Telephone_exchanges.
- Stored_program_control wikiPageWikiLink Computer_memory.
- Stored_program_control wikiPageWikiLink Crossbar_switch.
- Stored_program_control wikiPageWikiLink Electronic_switching_system.
- Stored_program_control wikiPageWikiLink Ericsson.
- Stored_program_control wikiPageWikiLink Erna_Schneider_Hoover.
- Stored_program_control wikiPageWikiLink Fault_tolerance.
- Stored_program_control wikiPageWikiLink Flying-spot_store.
- Stored_program_control wikiPageWikiLink List_of_telephone_switches.
- Stored_program_control wikiPageWikiLink Morris,_Illinois.
- Stored_program_control wikiPageWikiLink Panel_switch.
- Stored_program_control wikiPageWikiLink Programmable_logic_array.
- Stored_program_control wikiPageWikiLink Programmable_logic_controller.
- Stored_program_control wikiPageWikiLink Public_switched_telephone_network.
- Stored_program_control wikiPageWikiLink Stored-program_computer.
- Stored_program_control wikiPageWikiLink Strowger_switch.
- Stored_program_control wikiPageWikiLink Succasunna,_New_Jersey.
- Stored_program_control wikiPageWikiLink Telephone_exchange.
- Stored_program_control wikiPageWikiLink Time-division_multiplexing.
- Stored_program_control wikiPageWikiLink Vertical_service_code.
- Stored_program_control wikiPageWikiLinkText "Stored program control".
- Stored_program_control wikiPageWikiLinkText "phone switches".
- Stored_program_control wikiPageWikiLinkText "stored program control".
- Stored_program_control wikiPageUsesTemplate Template:Citation_needed.
- Stored_program_control wikiPageUsesTemplate Template:Refimprove.
- Stored_program_control wikiPageUsesTemplate Template:Reflist.
- Stored_program_control subject Category:Telephone_exchanges.
- Stored_program_control hypernym Technology.
- Stored_program_control type Company.
- Stored_program_control type Exchange.
- Stored_program_control type Redirect.
- Stored_program_control type Switch.
- Stored_program_control comment "Stored program control (SPC) is a telecommunications technology used for telephone exchanges controlled by a computer program stored in the memory of the switching system. SPC was the enabling technology of electronic switching systems (ESS) developed in the Bell System in the 1950s.Early exchanges such as Strowger, panel, rotary, and crossbar switches were constructed purely from electromechanical switching components with analog control electronics, and had no computer software control.".
- Stored_program_control label "Stored program control".
- Stored_program_control sameAs Q835880.
- Stored_program_control sameAs SPC_(telekomunikacja).
- Stored_program_control sameAs m.0h3rtj.
- Stored_program_control sameAs SPC-system.
- Stored_program_control sameAs Q835880.
- Stored_program_control sameAs 程控交换机.
- Stored_program_control wasDerivedFrom Stored_program_control?oldid=700647811.
- Stored_program_control isPrimaryTopicOf Stored_program_control.