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The D5 Digital Terminal System: A Case Study of a Comprehensive Quality and Reliability Program

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3 Author(s)
Kremer, W. ; AT&T Bell Labs.,North Andover, MA, USA ; Saraidaridis, H. ; Sripad, A.B.

The D5 Digital Terminal System is the new generation of channel banks. It is an automated transmission terminal system with stored-program control, and uses state of the art hardware and software. The D5 system has an extensive program to ensure high reliability and quality which includes the following elements: objectives and budgeting, reliability studies,hardware reliability enhancement, software quality assurance, qualification, production quality, and tracking. This paper discusses this comprehensive program, generic in nature, from the design stage through the field tracking of the product. While the investment in the program is not small, it has paid for itself many times over.

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Selected Areas in Communications, IEEE Journal on  (Volume:4 ,  Issue: 7 )