Multi user Web conferencing for Asp.net website

We want to provide web-conferencing (Audio/Video/Text Chat) feature to a Asp.net website's users. Hence we are looking for a READYMADE and READY TO USE solution or code which can be easily integrate in asp.net webpage. Required Features - - Should have Video chat, Voice chat and Text chat facility. - Should have capability to handle 30 concurrent users (Hardware is our responsibility). - Should have option to schedule conference/meeting. - Should have option to generate invitation link for other user to join. - Should have option for Group chat (Video/Voice/Text) and to create Different group. - Should have option to set status online/offline/away. - Should have option to mute/unmute mic and speakers. - Should have option to full screen and tiled screen video/voice chat windows. - Should have option to Ping/Buzz any user in the list. - User management (Admin Portal) to manage user's permissions. - Should have User and Admin Login page. - Communication server will be own. No third-party chat server (like: google, skype) is allowed. - Source code component must not be dependent on any third-party api. - Must be capable of running over LAN and WAN. In other words, Online and Offline mode. - Should have Dockable and Separate page of contact list. - Communication between Client and Server must be encrypted. - Solution must be Mobile responsive and mobile compatible. Final deliverable will be a asp.net page in which chat window will be present. and server side code (chat server source code developed in Node.js/php/asp.net..etc). NOTE- READYMADE and READY TO USE solutions are higher in priority. Thank You !