| 摘要 |
PURPOSE:To simplify the control and to improve the flexibility of an exchange, by accommodating a channel terminated to each of a plurality of memory addresses through multiplexing in time division on one line and detecting the slot of itself at an arbitrary point of the line. CONSTITUTION:Low speed communication of a loop network alpha is totalized in time division. In transmitting a TV signal especially, each one line or frequency split type channel is provided for each communication channel. The time division transmission system such as lines of the loop network alpha consists of only the processing section and it is advantageous in exchanging channels and using information resources in common, but since there is a limit in the channel speed, it is required to have suitable share of roles between the line and the beta' line connected to the exchange 8. The dynamic picture communication such as TV is executed at the loop network alpha, and call information and control information to the exchange 8 exchanging video signals are handled at a call processor 2 entirely. Thus, the dynamic communication is executed with the users to the terminal 4 via the beta' line including the information system mutually. |
