Video conferencing systems (VCS) have become practical in commercial and research institutions because of the advances of technologies in networking and multimedia applications. A video conferencing session involves multiple parties, possibly geographically inter-spersed, which exchange real-time video data. Samvadak - is an IP based communication system that is aimed to provide a communication hub through which peer to peer as well as multiparty text, audio and video communication can be facilitated. It is aimed to provide the framework that can publish real time as well as stored text, audio and video.

Today, because of the advancements in the computer and electronic sciences everything is going to be automated. In fact, some devices or infrastructures are capable to change the behavior according to situations; these devices are called Smart Devices or Smart Infrastructures. This system is designed to meet the requirement of appliance control in automated or smart infrastructures which includes home, offices, industries or may be sophisticated vehicles like aero planes. Appliance control basically refers the process or technique of controlling a device (including complete machines, mechanical devices, electronic devices, electrical devices etc.) using some comfortable, luxurious and reliable means based on some automation methods. Even a number of standards have been defined for wired and wireless controlling and automation of home appliances including Bluetooth, UPnP, X10 etc, this field is still in developing state. In this document we have proposed an appliance controlling system, named as Internet and PC Based Appliance Control (IPAC), using concepts of parallel port programming. IPAC is designed to control a device from PC and from Internet, and can be applied in any smart infrastructure to automate the device and can work with almost every type of automation method either it is wired (e.g. LAN) or wireless (e.g. Bluetooth). This system can be applied in designing smart homes, secure homes, centralized device controlling system, Bluetooth control system, WAP control system.