USB device for connection to a PC has telephone connection transceiver, internal bus and control circuit for controlling data transfer

摘要

USB terminal device (1) has a USB communications circuit (2) for connection to computer (9) via a USB bus (8), a telephone connection transceiver (3) for connecting the USB device to a telephone network (31) via telephone cables (29, 30) and an internal bus (14) for bi-directional data transfer between USB communications circuit and telephone connection transceiver with a control circuit (13) for controlling data transfer.