Telco Switching Control Center System

The Switching Control Center System was an Operations Support System deployed during the early 1970s. The SCCS replaced the need for full staffing switching centers 24 hours a day 365 days a year. Instead, the SCCS allows telephone companies to significantly reduce the number of technicians by implementing a local switching control center office and dispatching technicians as required to resolve problems or perform routine maintenance operations.

During the early 1970s, other older electromechanical switching systems such as the Number 1 Crossbar, Number 5 Crossbar, and Step-By-Step circuit switching systems were also phased out, and replaced with newer electronic switching systems controlled by proprietary computers. The SCCS system was phased out during the late 1980s and replaced by an OSS known as Network Monitoring and Analysis [NMA].

The primary purpose of the SCCS system was to provide operations, administration, maintenance, and provisioning [OAMP] functions.

Inputs to the SCCS - 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

Outputs from SCCS - analysis, reports, troubleshooting support, and other functions using newer faster DataSpeed-40 terminals.

Electronic Switching System [ESS]

In telecommunications, an electronic switching system [ESS] is:

• A telephone exchange - digitizes analog signals from subscriber loops, and interconnects them by assigning the digitized signals to the appropriate time slots. It may also interconnect digital data or voice circuits.
• A switching system - with major devices constructed of semiconductor components.

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