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is indeed a milestone. Next Generation Network (NGN) is an IP network which facilitates researcher to achieve this milestone.
IP Multimedia Sub-system (IMS) makes possible to deliver IP multimedia services to users. IMS uses Session Initiation Protocol (SIP) as a signalling protocol. Since IMS involves lot of signalling between IMS entities and other network elements, accordingly the signalling must guarantee quality of service. Test beds and measuring tools help us to perform various tests according to our need. These tests should be carried in early stages of development with designer in structured way according to well defined process and methods. Initially this thesis aims to identify useful tools for IMS which can develop an appropriate IMS
service creation environment. The basic task involves decoding of SIP message and to gather response time information. Finally to provide a proposal which tool is suitable for measuring signalling protocol regarding performance, exportability and hardware requirements.