Abstract: A method and apparatus for letting a user of a mobile device start an application by dialing. The number is either trapped by the mobile device, which starts an application that may connect to a server, or the server gets a signal from the mobile device, and sends back a message to the mobile device, causing it to initiate a session and connect to an IP address or a web page providing the service, or, over the voice channel, simultaneously (or not) with the vocal session, the server pass informational data, which causes a “listener” module on the client side such as the mobile phone which established connection with the server, to start a specific application, that may connect to a server which its address is given over the voice channel. The application or session is a multi-modal session passing audio, video, text, data, images, odor and the like.