web based sip dialer

web based sip dialer we want web based sip dialer with these features: 1. sip details should be [login to view URL] cleints and w e should have able to edit/add the sip details. [login to view URL] they press dial button customer shoukd hear an pre recorded mressage( editable upload file option) upto 30 sec. thne call should connect to their desired dialed number 3. and call should auto disconnect aftr 2 or 5 mins with displaying time on th epanel. and the panel shoud not allow the same cleints agian and agin to dial the same number or dialing from the same ip. 4. the panel should be able to load multiple sip accounts such that it should handle 100 simultanaeous calls waiting for ur reply from prashant.