| 摘要 |
PURPOSE:To transmit a voice PCM signal and the data signal of the other terminal simultaneously by using a transmission line is common by inserting the data signal of the other terminal between octets consisting of prescribed bits periodically. CONSTITUTION:On the data transmitting side of a demultiplexing device, the information bit Dn of the other terminal is inserted into octets An in a voice PCM code string outputted from a voice PCM MODEM 2 in each eight bits periodically and if the insersion timing of control signal bits of the octets S6, S12 having control signal bits C respectively is detected, the octets E6, E13 of the other terminal information are periodically inserted. On the data receiving side, the octets E7, E13 of the other terminal information are divided from the octets of the voice PCM code string on the basis of the extraction of said control signals. |
