| 摘要 |
PURPOSE:To attain ease of supervision by connecting a supervisory device to a channel of an optional node, assigning a time slot for supervisory data to the said channel and inputting the transmission data from other channel to the said time slot by the designation of the supervisory device. CONSTITUTION:The supervisory device SVP4 is connected to the CH of the node ND1bb to execute the supervision. When a CH under control is selected as an object of communication supervision from the SVP4, each control section 10a has a function transmitting transmission data in a conventional communication to a designated TS of time slots (TS) #s-1, #s-2 of a data frame assigned to the CH connected to the SVP4. Thus, when the CH11aa becomes an object of supervision, the control section 10a transmits the transmission data of the said CH11aa to the CH11ma by the TS#0 and transmits the same transmission data to the TS#s-2 designated with the transmitted time slot number, and a CH11cp-2 corresponding to the received ND1bb allows the SVP4 to receive the content. |
