| 摘要 |
PURPOSE:To reduce the waiting time and to simplify the constitution by transmitting an output of a DTMF sender in time division to a few main wire interfaces under the control of a subsequent control system. CONSTITUTION:In transmitting a DF or a DTMF signal of a PBX, the control system is arranged decentralizingly as a high-order 11 and a low-order 13, and the output is transmitted in time division with the command of the high-order control system 11 under the control of the low-order control system 13 from plural main wire interfaces 15-18 with the DTMF sender 14. Thus, the waiting time is decreased and the control system is constituted simply. |
