Date Added: Mar 2012
IP Multimedia Subsystem (IMS) is considered to be one of the important features in Mobile Next Generation Networks (MNGN). It adds value to the mobile services and applications by integrating mobile network resources, such as location, billing and authentication. This is achieved by enabling a third party access to network resources. In previous work, the authors have presented a testbed to be used as platform for testing mobile application prior to actual deployment. They have chosen a novel IMS based MObile Mass EXamination (MOMEX) system to showcase the benefit of designing an IMS based mobile application. They identify two aspects essential to of the application namely security threats and delay analysis.