| 摘要 |
PROBLEM TO BE SOLVED: To provide an Internet phone system enabling a user to select communications via the Internet or communications via a public network thereby enhancing the user-friendliness. SOLUTION: A mobile terminal device 1 has a conventional mobile phone function, and also a function as a slave unit of an Internet telephone. When being used as the slave unit of the Internet telephone, a voice signal inputted from an audio input unit 2 of the mobile terminal device 1 is encoded at a coded processing unit 5, and then a signal processing unit 7 attaches an error correction code and the like. The data are sent to a communications device 13 by a wireless processing unit. The communication device 13 converts the audio data into a packet structure appropriate for the Internet communications, and then outputs it to the Internet. Accordingly, the Internet telephone via the communications device 13 is realized. COPYRIGHT: (C)2004,JPO
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