Abstract: Disclosed is a terminal device (10) for payment data exchange comprising interfaces for coupling to a point of sale devices (26), to a mobile phone (14), and to a payment center (1). The payment data exchange is performed on two different ways. In a first way from the payment terminal device (10) via the mobile phone (14) and the mobile voice network (5) to the authorization center (1) or, vice versa, from the payment center (1) via the mobile voice network (5) and the mobile phone (14) to the payment terminal device (10), wherein the payment data are transferred between the payment terminal device (10) and the mobile phone (14) on voice information. On the second way the data are transferred directly from the terminal device (10) via e.g. the network (5) to the authorization center (1) and, vice versa, from the payment center (1) via the network (5) to the payment terminal device (10).

Abstract: A mobile transaction system comprising: a user's mobile phone, a mobile network of any provider, a transaction device equipped with a microphone, a transaction processing center with dynamic early media generation capability and with the capability of communicating with the mobile network, wherein, upon a mobile phone user's call through the mobile network to the transaction processing center, the transaction processing center detects the call and, instead of answering the call, starts transmitting user identification data as a dynamically modulated signal through an early media connection to the mobile network and further to the user's mobile phone; wherein, the speaker of the user's mobile phone reproduces the modulated signal, which is then captured by the transaction device through the microphone.

Abstract: Disclosed is a terminal device (10) for payment data exchange comprising interfaces for coupling to a point of sale devices (26), to a mobile phone (14), and to a payment centre (1). The payment data exchange is performed on two different ways. In a first way from the payment terminal device (10) via the mobile phone (14) and the mobile voice network (5) to the authorisation centre (1) or, vice versa, from the payment centre (1) via the mobile voice network (5) and the mobile phone (14) to the payment terminal device (10), wherein the payment data are transferred between the payment terminal device (10) and the mobile phone (14) on voice information. On the second way the data are transferred directly from the terminal device (10) via e.g. the network (5) to the authorisation centre (1) and, vice versa, from the payment centre (1) via the network (5) to the payment terminal device (10).