We want to have a fully furnished PTT (Push To Talk) solution. Server side should IP Multimedia Subsystem (IMS) architecture preferably by using OpenSIP, client side initially on Android and on Windows PC client then Blackberry and iPhone, Windows Mobile, it should cover all of the functionality of Zello Client.
Experience on PTT projects is essential and will be to appraised and awarded after fully successful completion of project.
17 freelancer đang chào giá trung bình $9872 cho công việc này
Hi, We are a team of experienced Mobile Developers with over 5 years of expertise. We are good to start work by coming Monday. Looking forward to work along with you soon. Warm Regards Trignodev Software