Feature interaction filtering and detection with use case maps and LOTOS.

Jameleddine. Hassine
Telephony systems have evolved from the Plain Old Telephony System providing only the basic functionality of making phone calls, to sophisticated systems in which many features have been introduced, providing network subscribers more control on the call establishment process. However, these facilities are confronted with a major obstacle known as the feature interaction problem. A feature interaction occurs when at least one feature is prevented from performing its functionality or when the system functions incorrectly...
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