| 摘要 |
<p>PURPOSE:To freely select a channel, and to improve profitability by providing a means to analyze data on a control channel and detect selection information, and the means to velocity-convert a signal flowing in a subscribers line and time-division-multiplex it to a multiplex transmission line. CONSTITUTION:When a control signal from a control channel line 10 arrives, a CPU 13 detects and decodes a connection destination code, and repeats a control signal, which arrived to the control channel to be multiplexed by a TS (time slot) control part 5 from a subscribers terminal and information to designate the time slot to be used on the multiplex line is added to, to the multiplex transmission line designated by the connection destination code through a multiplex transmission line side control channel line 11. When an answer from an opposite side party comes, the CPU 13 receives it through the control channel line 11, and starts communication, and the signal of a speech channel line 4 is outputted to the time slot on the multiplex line which the CPU 13 designates through a control line 12 after its signal velocity is converted by the time slot (TS) control part 5. Thus, by adding previously the designation of the multiplex transmission line, the channel can be freely selected.</p> |
