The Book Modeling Quality of Service (QoS) in a Telecommunications Network using Neuro-fuzzy logic, this is generally the analysis of GSM theory as a telecommunications network and ANFIS as a non-linear modeling tool. The ANFIS-based model developed has demonstrated that it can be used to model Quality of Service using Logical Control and Traffic Channels key performance indicators, due to its degree of consistency. The statistical analysis has further ascertained and confirmed the accuracy of the ANFIS-based model developed.