>> one end of the phone connection could be hosting in a web app via flash/silverlight. Have you seen Phono? http://phono.com/ http://phono.com/ - It does exac

>> one end of the phone connection could be hosting in a web app via flash/silverlight. Have you seen Phono? http://phono.com/ http://phono.com/ - It does exactly what you're describing. Phone in the browser, talking to a SIP backend.