Patent ID: 6690948
Filing Date: 2004-02-10
Classification: H04L,H04W

Abstract:
A data transmission terminal apparatus comprising:a portable type wireless telephone terminal; and a terminal control apparatus connected to said portable type wireless telephone terminal, for transmitting data as a dial signal via said portable type wireless telephone terminal to a telephone communication line when said telephone communication line is formed between a data communication counter party and said portable type wireless telephone terminal using a public telephone network, wherein said data communication counter party is previously determined; said terminal control apparatus comprises a memory for storing a telephone number of said data communication counter party; and when said terminal control apparatus senses that a telephone call sent via said portable type wireless telephone terminal corresponds to a telephone call issued from said data communication counter party based upon both a calling number contained in said telephone calling information and a content of said memory, said terminal control apparatus automatically responds to said telephone call to thereby form said telephone communication line, and sends out data as a dial signal via the telephone communication line to said data communication counter party, and wherein said terminal control apparatus sends out said data as the dial signal to said data communication counter party in response to the telephone call issued from said data communication counter party; repeatedly issues a telephone call to said data communication counter party at a predetermined time interval during a predetermined time period after a line is disconnected; and transmits the data via the formed telephone communication line of said portable type wireless telephone terminal.