| 摘要 |
A communications system for mobile data transfer, comprising a communications network (25), an application module (45, 46, 47) and a separate terminal module (48), where data is transferred between the network (25) and the application module (45, 46, 47) via the terminal module (48), which hides network dependent operations such as error control from the application module. By implementing the communications stack (12, 13) in the terminal module rather than in the application module, the invention is capable of providing a complete communications package, in a portable terminal module (48) or on a single plug-in card, capable of interfacing with a wide variety of application modules (45, 46, 47, 92). |
