This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Switching Control Center System" – news · newspapers · books · scholar · JSTOR(April 2016) (Learn how and when to remove this message)
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 the CB Unix operating system and custom application software and device drivers that were developed and maintained by Bell Labs in Columbus, Ohio USA. SCCS was ported to the AT&T 3B20 and 3B5 computers running UNIX System V Release 2 in the early 1980s.
Prior to the SCCS, many telephone company switching centers were staffed 24 hours a day 365 days a year. With SCCS, telephone companies could significantly reduce the number of technicians and dispatch them as required to resolve problems or perform routine maintenance operations.
During the early 1970s, telephone companies began to phase out the older electromechanical switching systems such as the Number 1 Crossbar, Number 5 Crossbar, and step-by-step circuit switching systems and replace them with newer electronic switching systems that were controlled by proprietary computers but still used analog switch fabrics such as Bell-proprietary ferreed switch devices.[1]
The SCCS system was phased out during the late 1990s and replaced by an OSS known as Network Monitoring and Analysis[2] or NMA that was developed by Bell Communications Research now Telcordia Technologies. AT&T developed additional products based on SCCS software, such as Compulert.
The primary purpose of the SCCS system was to provide operations, administration, maintenance, and provisioning (OAMP) functions for telephone company network operations staff. The SCCS accepted as input the slow 110 baud Teletype messages from circuit switching systems such as the Number 1 ESS, Number 2 ESS, Number 3 ESS, Number 5 ESS, and Traffic Service Position System (TSPS) network switches and provide analysis, reports, troubleshooting support, and other functions using newer faster DataSpeed-40 terminals.
This system was documented in the Bell System Technical Journal and AT&T internal Bell System Practices during the 1970s.
The 5ESS SwitchingSystem is a Class 5 telephone electronic switchingsystem developed by Western Electric for the American Telephone and Telegraph Company...
mobile operating systemControl Panel (Windows), a part of the Microsoft Windows graphical user interface SwitchingControlCenterSystem, a 1970s-era telecommunications...
for switching and with separate compartments for power switching and control. Motor controlcenters have been used since 1950 by the automobile manufacturing...
crossbar switches in the Bell System. Electronic switchingsystems gradually evolved in stages from electromechanical hybrids with stored program control to...
Network switching subsystem (NSS) (or GSM core network) is the component of a GSM system that carries out call out and mobility management functions for...
database management system. Several Bell System operation support system products were based on CB UNIX such as SwitchingControlCenterSystem. The primary...
advantage of a lighting controlsystem over stand-alone lighting controls or conventional manual switching is the ability to control individual lights or...
A distributed controlsystem (DCS) is a computerized controlsystem for a process or plant usually with many control loops, in which autonomous controllers...
connected/targeted system. Emulated USB provides an instantaneous and reliable switching action that makes keyboard hotkeys and mouse switching possible. However...
The European Train ControlSystem (ETCS) is a train protection system designed to replace the many incompatible systems used by European railways, and...
circumventing this access control. An alternative of access control in the strict sense (physically controlling access itself) is a system of checking authorized...
following: Source Code ControlSystem, a method of controlling software versions SwitchingControlCenterSystem, an Operations Support System used by telephone...
aircraft controls are explained in flight dynamics. This article centers on the operating mechanisms of the flight controls. The basic system in use on...
the pressure tank. Switching off an electrically driven gas compressor when a set pressure is achieved in the reservoir Switching off a gas compressor...
Laboratory in 1965. Davies coined the modern term packet switching and inspired numerous packet switching networks in the decade following, including the incorporation...
Conditioning) equipment needs a controlsystem to regulate the operation of a heating and/or air conditioning system. Usually a sensing device is used...
contrasts with message switching and packet switching used in modern digital networks in which the trunklines between switchingcenters carry data between...
they can handle, finite switching time, etc. The ideal switch is often used in circuit analysis as it greatly simplifies the system of equations to be solved...
parental controls for the console. The Switch did not launch with any multimedia-oriented features, such as a web browser, messaging system or support...
Petrone Launch ControlCenter (commonly known as just the Launch ControlCenter or LCC) is a four-story building at NASA's Kennedy Space Center on Merritt...
1990s and 2000s, Verizon switching operations included a small DMS-100 telephone exchange and a SwitchingControlCenterSystem. The building's CLLI code...
the switching and routing plan under management by AT&T Long Lines into a hierarchical network with five levels, termed "classes of switchingsystems. The...
AT&T used the Dataspeed 40 terminals internally for their SwitchingControlCenterSystem and similar purposes. The Dataspeed 40 was also sold commercially...
Global Information