SIP-based content development for wireless mobile devices

The use of mobile phones and PDAs are increasing by the minute and the user demands and needs are also increasing. Usage of SIP protocol is also increasing. Thus combining the two by creating applications comply with the demands and needs of the mobile phone and PDA users and industry. This paper illustrates and describes a way of developing User Agents for wireless devices, such as handsets and PDAs. We briefly describe the tools we used to develop the applications. We also illustrate how we used the described tools, by showing a simulation of our developed system and how it works.