Journal of Communications
IP Multimedia Subsystem (IMS) is now being a solution for packet switched networks. The future generation network is amalgamating the infrastructure of wireless/wire-line for providing the standard interface for Internet services. Nevertheless, the network infrastructures like multimedia and non-multimedia do not have any native mechanism to interpret the key schema of client media tools to establish the communication such as voice and data. To establish, as such services, a signaling protocol of Session Initiation Protocol (SIP) is being put to use to control the communication on Internet for establishing, maintaining and terminating the communication session.