A method and apparatus for enabling multiple services to be invoked in a specific precedence per call are disclosed. For example, the present method allows a subscriber to interact with a plurality of services provided by a service provider on a single call....http://www.google.fr/patents/US8121274?utm_source=gb-gplus-shareBrevet US8121274 - Method and apparatus for processing multiple services per call
Method and apparatus for processing multiple services per call