We have developed a product for sale to the general public that utilises the Skype API with our own front end, running on our own custom hardware. But Skype has been acquired by Microsoft, and the Skype API is being discontinued. So we are seeking an alternative means of conducting Video Calls and Voice Calls, with a similar pricing structure to Skype. While we developed our initial prototypes ourselves, we are now seeking a more rapid development of a prefessional product by engineers / IT people experienced in SIP, VoIP and video. We are also looking for advice on the best VoIP providers to make calls to landlines and mobiles in Australia and other countries, which will be incorporated into each of our devices.