| 摘要 |
PURPOSE:To improve the reliability of data transfer without constructing a LAN. CONSTITUTION:Data from a digital line are diffused in spectrum by an SS transmission/receiving circuit 13, superimposed with an analog signal from an analog line network in an analog line exchanger 15 and transmitted to an extension line. On the other hand, a spectrum diffusion signal from the extension line is inverse diffused in the SS transmission/receiving circuit 13 via the analog line exchanger 15 and transmitted to a digital line via a packet control circuit 12 and a digital line exchange function block 11. The analog signal is transferred between the analog line network and the extension line via the analog line exchange 15. |
