System 75: System management

System management is the task of installing, administering, and maintaining a communications system. Customer and technician access to software-based administration and maintenance capabilities in the System 75 office communication system occurs through an on-line video display terminal called the System Access Terminal (SAT). With the SAT, the user may install, test, rearrange, and change equipment and services. The SAT hides the internal complexity of the system while presenting all the capabilities in as simple a manner as possible. A layered software architecture is used to perform data view mapping from the user view to the internal data representation.