| 摘要 |
PURPOSE:To reduce the circuit scale by providing a voice data separation section to a reception section of one channel and switching the channel in response to the result of discrimination of a channel discrimination section. CONSTITUTION:A channel discrimination section 5 receives a code commanding the kind of the transmission data extracted from each transmission data from 1st and 2nd synchronizing sections and discriminates whether or not the voice data is included in the transmission data of any channel. A channel changeover section 6 is subject to changeover control in response to the result of discrimination of the channel discrimination section 5, the transmission data of one channel including the voice data is supplied to the 2nd synchronization section 4 to switch the connection so that the transmission data of the other channel not including the voice data is supplied to the 1st synchronization section 3. Then a voice data separation section 7 separates the voice data included in the transmission data from the 2nd synchronization section 4 and the voice data is fed to a voice CODEC 8. Thus, the circuit scale is reduced. |
