Abstract: A method enabling a mobile communication terminal belonging to an operator's network to access a service such as push mail, which method comprises a step of creating a first permanent private connection between a platform and the operator's network, which platform comprises a database of the users of pre-payment services and a dynamic IP address-assigning server, which method further comprises: a step of receiving a request from the mobile communication terminal, a step of identifying that terminal and the service requested by it, a step of querying the user database in order to determine whether the identified terminal enjoys prepayment for the requested service, a step of charging the credit of the terminal's user for the requested prepaid service.

Abstract: A method enabling a mobile communication terminal (1) belonging to an operator's network to access a service such as push mail, which method comprises a step of creating a request from the mobile communication terminal (1) intended for a payment server (2), a step of identifying that terminal (1) and the service requested by that terminal, a step of querying a user database (3) in order to determine whether the identified terminal benefits from prepayment for the requested service, and a step of sending the mobile terminal (1) at least one piece of information about the user's account for the requested prepaid service, the communication between the terminal (1) and the payment server (2) being carried out using an http(s) protocol, with the payment server (2) querying said database (3) and transmitting the information about the user's account in XML language.

Abstract: An inductive load driving amplifier is disclosed which includes two serially connected transistors, with Zener diodes limiting the collector-emitter voltage of the one and diverting the collector-base current of the other when the first one switches off. The driver is implemented as an integrated circuit. This collector isolation constitutes a high voltage Zener diode which contributes to limit the collector voltages. The combination of these features prevents the device from being exposed to second breakdown when switching highly inductive loads (e.g. several Henrys under 50V), thereby avoiding the harmful effects of breakdowns during switching.