Abstract
Telephone switching systems are an interesting class of legacy system as they are complex, distributed and safety critical. As with most legacy systems, a simple replacement is impossible (or at least impractical), therefore changes in business practice and technology have induced a perpetual evolution of telephone switching systems.
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Calder, M., Magill, E., Reiff-Marganiec, S., Thayananthan, V. (2002). Theory and Practice of Enhancing a Legacy Software System. In: Henderson, P. (eds) Systems Engineering for Business Process Change: New Directions. Springer, London. https://doi.org/10.1007/978-1-4471-0135-2_8
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DOI: https://doi.org/10.1007/978-1-4471-0135-2_8
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