Abstract: XML communication protocol between a user terminal, such as a radio alarm clock, and a services platform via the Internet network for accessing an audio file available from a data streaming server.

Abstract: A radio communication adapter box (1,11) for data exchange computer link between a first master-type computer equipment and at least one second peripheral-type computer equipment, the box being connected to at least one second computer equipment. The adapter includes a radio transmission/reception module (2) according to the Bluetooth® protocol with a Bluetooth® protocol stack, at least one interface controller with wire link connector towards at least one second equipment and a stand-alone electro-chemical power supply source (5), the power supply source (5) feeding at least one second equipment. The invention also relates to an adapter as well as a communication system for computer data exchange are also disclosed.