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The contribution of this paper is twofold. First, we introduce a new efficient analytical method for uplink performance estimation in multi-service UMTS networks by taking the dynamic behaviour of the user transmission rate into account. Our performance measures are the average user information rate and the blocking probability of new calls. Next, a traffic management technique is applied to UMTS and incorporated into the analytical approach to specify how resources have to be adequately engineered to meet quantitative performance objectives. For this we investigate the joint behaviour of the admission control characteristics, scheduling, threshold and reservation scheme for UMTS terrestrial radio access network (UTRAN) in terms of their agreement with grade of service (GoS) requirements. The performance of the proposed algorithms is evaluated.