Investigation of Basic Services Interoperability Problems in Next Generation Networks

In this paper we introduce a next generation network (NGN) pilot which was designed and implemented in Iran Telecom Research Center (ITRC). Four vendors have participated in pilot competition. Pilot has been directed using a predefined test strategy and its main goal is evaluation of NGN services to be implemented in Iran. One of the major services to be delivered in NGN is basic call. The prime focus of this paper is explanation of different basic call test scenarios and evaluating its related issues using different test cases. Especially, the problems of a basic call set up in a multi-vendor environment which are the key problems of this line are elaborated. These all leaded us to interesting results which can be considered as future works of this field