In embodiments, the present invention is directed to methods of handling calls received from customers. In one embodiment, the method includes receiving a call from a customer who called a promotional telephone number. The phone call is connected to an IVR system. The IVR system maintains a set of rules...http://www.google.es/patents/US7881454?utm_source=gb-gplus-sharePatente US7881454 - Integrated call management
