A network selection system that includes a mobile terminal in communication with a first network, a second network in communication with the first network and an application layer triggering mechanism that determines which one of a plurality of triggers is required in a certain set of circumstances to provide a particular application. In particular, the a standard curve is generated, wherein the standard curve modulates an input signal to generate a spread spectrum of frequencies with reduced amplitude and spreading of bandwidth. Subsequently, it is decided whether SOF packets are being periodically sent from the host computer, and if periodic sending has been interrupted, the connection to the host computer will be deemed lost, and the saved authenticated state will be deleted.