ANALOG VIDEOPHONE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an analog videophone system which can transmit plural kinds of data without generating a drop of throughput. SOLUTION: A data framing control part 9 frames PC data sent from a PC interface control part 8 in a data area that has a control, field of an I format and frames asynchronous data that is generated by a system control part 5 in a data area that has a control field which uses a U format. A multiplexing control part 10 allocates one data area in one frame in response to an allocation request for a data area from the part 5. PC data and asynchronous data which are outputted by the part 9 are separately multiplexed into different data areas and transmitted.