As the increase of complexity in the telecommunication service and system, the importance of service quality and reliability has also gained more interest. In this paper, state-of-the-art of various quality terms has been discussed; as well, the relationship among these terms toward user satisfaction and a new reliability evaluation perspective has been presented through the measurement parameters. Moreover, the limitations of traditional reliability evaluation methods have been raised; accordingly, the selective resilience parameter algorithm and the modern reliability evaluation method are proposed by using Bayesian statistics. The proposed algorithm can provide practical reliability measurement and can apply for a preventive failure or maintenance plan. Besides, the novel estimation approach can incorporate the effect of both subjective and objective parameters into the service or system reliability estimation.