A system is provided for receiving prepayment of telecommunication services is provided. The system comprises a wireless communication network, a wireline communication network, and a pre-payment server communicating with both the wireless communication network and the wireless communication network....http://www.google.fr/patents/US6529593?utm_source=gb-gplus-shareBrevet US6529593 - Prepaid phone service for both wired and wireless telecommunication devices
Prepaid phone service for both wired and wireless telecommunication devices
