Communication system and data adapter

A data terminal to be used in a communication system, the communication system including a wireless communication device and first data transmission means for setting up a local data transmission connection between the data terminal and the wireless communication device, wherein the first data transmission means includes a data transmission means of the data terminal and a data transmission means of the wireless communication device, the data terminal comprising:

• means for running application software;
• an application programming interface;
• means for controlling the data transmission means of the data terminal;
• a first connection interface for data transmission between the application software and the application programming interface;
• a common data adapter for transmitting data using different transfer protocols for different media types;
• a second connection interface for data transmission between the application programming interface and the data adapter;
• and
• one or several media interfaces for data transmission between the data adapter and the data transmission means of the data terminal.

A method for data transmission between a data terminal and a wireless communication device, in which method:

• a local data transmission connection is set up between the data terminal and the wireless communication device;
• the data terminal is equipped with an application programming interface and the data transmission means for the data terminal;
• an application software is run in the data terminal;
• data is transmitted between the application software and the application programming interface via the first connection interface;
• a common data adapter is provided for transmitting data using different transfer protocols for different media types, wherein information is transmitted between the application programming interface and the data adapter via a second connection interface;
• and
• information is transmitted between the data adapter and the data transmission means of the data terminal via one or several media interfaces.