The subscriber of the thesis is MediaTek Wireless Finland Ltd, and the objective was to develop a tool which helps the developer in his / her everyday development. The goal was to develop a tool which can read and detect SIP messages from a PCAP log file and finally generate a new test case file to a unit test environment. In this thesis test case contained scenarios such as UE registration, mobile originated and terminated call and UE de-registration of IP Multimedia Subsystem.

The tool was developed by using Python language. It was chosen because there was already an existing script written in Python and it was a good platform to start from. The existing script searched the needed parameters to Tshark and printed SIP messages to the text file with little modifications.

The tool achieved the goal set for it and it is a good platform for future improvements. The tool will be part of everyday developing in Oulu and other sites of MediaTek.