A call establishing method comprising registering with a server to obtain authorization credentials, obtaining a client encryption key using the authorization credentials, wherein the client encryption key is uniquely associated with a web session, establishing a media session for the web session, creating a client side call state for the media session using the client encryption key, wherein the client side call state comprises call information that is associated with the web session and the media session, and wherein the client side call state is encrypted using the client encryption key, and storing the client side call state within a network device.