| 摘要 |
PURPOSE:To raise communication efficiency of a composite communicating system, by constituting so that a band assigned to a different kind of information in the composite communicating system can be switched to each other. CONSTITUTION:Information transmitted through a circuit is inputted to a circuit terminal device 317 of a band switching device 31. In this stage, 64kb/s and 16kb/s are made voice information and data information, respectively. When control information of the information is a switching instructing signal, it is sent out to a switching signal line T. This switching instructing signal is a signal for switching the voice information and the data information to 16kb/s and 64kb/s, respectively. Accordingly, the voice information is sent out as 16kb/s to a voice information line V and the data information is sent out as 64kb/s to a data information line D, but by the switching instructing signal, a switching part 320 and a switching part 321 are switched to the side of ADMCODEC 315 and the side of a 64kHz clock oscillator 319, respectively. In this way, the voice signal of 16kb/s reaches a telephone set 1 through an LPF 313, and the data information of 64kb/s reaches a data terminal equipment 2 through a data circuit unit 316. |
