Twilio Call Centre Web App

I would like a web app using the twilio api to run as a call centre. It is probably best you have worked with the twilio api before or have done something similar. Features: Staff login Customers can call my 1800 xxx xxx phone number and staff can see the number calling and answer calls using the web app. A sound is played when customer is calling Contact management so staff can see the name of the customer calling Staff can click to answer the call, and click to hangup once complete Can click mute microphone Can transfer to other staff member Stats page Style: Admin dashboard style layout Admin options: turn call recording on or off listen to previous calls add/remove users upload/change the busy User options: change profile phone change name Other: If you have done something similar before, please suggest other feature you think are suitable.