| 摘要 |
PURPOSE:To economically and easily perform fast data transmission in a branch and toll data transmission by performing the fast data transfer in the branch by attaching an optical transmission equipment usable by personal management on a fast private line service and utilizing a nonuse time slot effectively, and taking dependent synchronization with a transmission line offered by a telecom munication server. CONSTITUTION:The optical signal 301b of a branch optical transmission equip ment 701 is inputted to a signal synthesizing device 50 with the optical signal 301a of an optical transmission/reception equipment 60 offered by the telecommu nication server. The time of time slots (P1-Pn) for branch are selected for the optical signal 301b side, and that of time slots (T1-Tn) for toll transmission are selected for the optical signal 301a side, and they are outputted as an optical signal 302. The optical signal 302 is converted to a terminal frame by a line terminating device 20, and is inputted to a terminal 101 as a reception signal 303. When a terminal 102 performs the toll transmission, the conversion of the time slot from the down Tn to the up Pn is performed by the terminal 101. In such a way, it is possible to economically and easily perform the fast data transmission with high quality and the toll data transmission in a firm. |
