| 摘要 |
PURPOSE:To enable to cope with the busy state of link while making control entirely the same as the operation under normal communication condition, by providing the flip-flop and selection circuit. CONSTITUTION:When the remote terminal 5-0 transmits the conditional information by using the control information channel of #0 frame, the address counter 13 outputs the address information corresponding to #0 and sets it to the address register 14. Further, the time slot To during #0 frame period is ''1'' and the information existing on the digital line 6 during To period is written in the address designated with the address register 14 of the conditional memory 9 via the AND circuit 16, serial parallel conversion circuit 12, AND circuit 18. With the link in busy condition, flip-flop 11 is set, resetting the AND circuit 18 and enabling to set the AND circuit 17. |
