The telecommunications networks of the present invention include a wireless enhanced service platform (112) which is coupled to a home location register database (110) and a prepaid platform (116). The telecommunications networks of the present invention may also include a mobile switching center (108) for accepting calls from a wireless handset (106), an interexchange network (114) that carries calls to the prepaid platform (116), and a local network (118) for terminating calls. The present invention also includes a method for setting up a call in a telecommunications network comprising sending transaction capabilities application part messages containing prepaid parameters between a wireless enhanced service platform (112) and a prepaid platform (116), and a method for sending transaction capabilities application part messages containing prepaid parameters between a mobile switching center (108) and a prepaid platform (116). The prepaid parameters are the information needed to process and bill a debit call.