Development of an embedded IP phone
In the last few years PSTN slowly got overtaken by VoIP, which is most commonly used over SIP protocol. Phone-service providers has been using IP-based voice transfer exclusively for a long time, still, there is no widely available, cheap, dedicated VoIP hardware, which is able to harness these features of SIP (e.g. videocalls). At the same time, cheaply available System-on-chip IC's are housing enough performance to realize such a hardware with ease, making SIP-based videocalls available to a wider consumer base.
The task is to develop and realize an expansion board and necessary software package, which can be attached to a chosen single-board computer to provide a SIP compatible VoIP phone implementation. The above device has to contain all the needed peripherals, like: graphical LCD display, microphone and headphone in- and outputs, at least one type of input. It has to be able to make SIP-based, real-time videocalls.