Patent ID: 8249053

Claim:
A voice communication system for coupling with a telephone and achieving a PSTN communication and an internet communication, comprising: a host for executing an operating system and an internet communication program to carry out the internet communication, comprising: a processing module for performing data processing; a storage module coupled to the processing module for providing data access; a network control circuit coupled to the processing module and the internet for controlling sending and receiving network packets; and an audio circuit coupled to the processing module for performing sending and receiving operations of audio data; a communication control device coupled to the host, comprising: an interface circuit coupled to the audio circuit for providing a specified voltage level suitable for the telephone according to audio data generated by the audio circuit; and a switching circuit coupled to the interface circuit, a PSTN interface and a telephone interface, for coupling the telephone interface with one of the interface circuit and the PSTN interface according to a switching signal generated by the host; wherein the audio circuit converts a first analog signal from the telephone via the telephone interface into a first digital signal and decodes the digital signal to obtain a keypress data according to a dual tone multiple frequency signaling standard; wherein when the keypress data correspond to a first predetermined data, a keypad of the telephone is allowed to remotely control cursor directions on an operating interface of the internet communication program compliant with a voice over internet protocol (VOIP) to thereby operate the internet communication program; and wherein characters on the keypad of the telephone correspond to different cursor directions and at least one operation of the cursor of the internet communication program.