INFORMATION COMMUNICATION DEVICE

PROBLEM TO BE SOLVED: To provide the information communication device where a voice speech is conducted via a network with sufficient practicality by preventing interruption of a conversation during a speech, missing of voice, and rapid and remarkable distortion. SOLUTION: In the case that more voice data than an estimated amount are stored in a transmission buffer 15, a data quantity control section 16 controls a quantization step of a quantization section 14 to reduce the produced data quantity. If the transmission buffer 15 is nearly fully occupied regardless of it, a voice synthesis section 17 is used to make a notice of possibility of a speech stop, and when the transmission buffer 15 is fully occupied, data production is stopped. When the transmission buffer 15 is nearly idle, the quantization step of the quantization section 14 is set smaller and since the data quantity can be increased, data with excellent sound quality can be transmitted.