To enable a device of a receiving side to prescribe all transmission lines which are used at an information providing side just by receiving the data via the single transmission line by sending the data including the added transmission line information to each of transmission lines via the information providing side.
A personal computer 50 inputs the stream data such as the real time video information which continuously appear from an Internet 11 via a LAN 10. In fact, the stream data appear with the packet form data and accordingly a packet acquisition part 52 inputs sequentially the stream data in every packet from a LAN interface 51. A packet distribution part 53 divides the inputted stream data and distributes them to the subscriber lines 63(1)-63(3) of a sending destination. Then the part 53 inputs a transmission line list including the ISDN numbers of lines 63(1)-63(3) that is held at a transmission line list holding part 54 to the transmission line list addition parts 55(1)-55(3) and sends the distributed stream data packets and the transmission line list contents to the lines 63(1)-63(3), respectively.
ISAJI MAKOTO
KISHIDA KATSUMI
