A Practical Application of Software Reliability to a Large- Scale Switching System
25 April 1989
The 5ESS(R) Switch, used for large-scale switching systems, is composed of extremely complex hardware and software. To achieve a reliable system, it is necessary to have methods that estimate and improve the correctness and reliability of the software. Software reliability is defined as the probability that the software will execute without failure for a specified time in a specified environment. A study has been initiated to measure software reliability and to implement a strategy for monitoring the software testing process before releasing the product to the customer.