The integration testing and system testing strategies used in the development of the Traffic Service Position System No. 1B (TSPS No. 1B) are described in this article. It discusses novel methods developed for the integration and testing of the first embedded application of the 3B20D Processor and DMERT operating system. The new testing techniques and project management aides, which were vital to the achievement of system quality for the Bell System service, are described. The first TSPS No. 1B went into service on November 20, 1981, in Fresno, California.
This paper is an introduction to the Remote Trunk Arrangement feature of the Traffic Service Position System. The design permits the tsps trunk circuit, which connects the subscriber to the operator, to be located in a distant, rural location. All the logic, records, control, and centralized access to the operators remains at the base unit. The Remote Trunk Arrangement is controlled over a data link and up to eight rta subsystems can be extended from a single tsps base unit. The addition of the rta feature, expansion of the geographical area served by tsps, and the necessity for handling special operator service traffic, affected several tsps design parameters and required the addition of several new features. These supporting features and the operational characteristics and design aims of rta are described.
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