Research And Implementation Of Calling Trace System On IMS MRBT&MCI Services

With the continuous expansion of communication network and the development of communication technology, the communication market of China expands very rapidly. The competition among operators has become more intense. Providing higher quality services for users and attracting more customers have become an important reason that induces the advent of different kinds of telecommunications services. Based on the analysis of the background, this thesis brings forward a solution of calling trace system for MRBT&MCI services and its implementation. The contents in this paper are as followings:1. In-depth studying and understanding of IMS network and SIP signaling, especially concerning the structure of SIP message, this provides the basis of analyzing the calling trace request.2. Introduction of the key technologies used in the system, focused on analysis of the storage and forwarding of calling trace request and response based on JMS(Java Message Service) technology.3. Discussion of the overall design on the system structure, and giving the concrete realization of it.4. Different results under the condition of normal calling flow or abnormal ones are provided after detailed analysis of the calling flow control about MRBT&MCI services based on IMS network.5. According to the theory of load balancing between machines, putting forward a way to balance the load between machines and realizing the redundancy of the system as well as solving the problem of quick response to user's request.The main innovations of this paper are as followings:1. Presentation of a solution on MRBT&MCI services in IMS network.2. Analysis of the SIP headers fields, realized the multi-condition trace and multi-request at the same time.3. Generation of JMS temporary queue to store calling trace result.4. Improved the reliability and availability of the system on account of using JMS clustering to achieve load sharing and system fault transfer.Now the system has been installed and tested successfully in the Experimental network in Guangzhou Telecom Research Institute. It is believed that the system will be used by more and more operators in the future when the deployment IMS network is widely deployed. Besides huge profit and social benefits, the study on calling trace will produce a certain reference to other similar values-added services in IMS network.