| 摘要 |
PURPOSE:To decrease the length of a highway frame, by securing an independent frame constitution for the signal of each line forming the lower position group of a network and multiplexing the bits to form the higher position group and then to put the group on the highway. CONSTITUTION:A main station terminal MST, a slave station RST, a talking terminal IFT and a supervisory terminal SVT are connected with a supervisory line 7, a P line 8, an H line 9 and an M line 10 respectively. These lines 7, 8, 9 and 10 deals with the services for the state supervisory at each station, the 1:N exchange between the main station and each slave station, the fixed connection among the slave stations, and the 1:1 fixed connection between the main station and each talking station respectively. The signal on each line is actually transmitted with the multiplexing given to a highway frame comprising 32 bits. The frame bits, the P line bits, the H line bits, the supervisory line bit and the M line bit are shown by FA-FD, d1-d16, h1-h8, SV and M respectively. |
