Abstract: A module and method for automatically detecting and switching between FXO and FXS interfaces via a single RJ11 is disclosed. The module comprises a RJ11 jack, a USB controller, a modem element, a SLIC module and a DAA module, wherein the USB controller is electrically coupled with a computer for automatically detecting whether a PSTN phone line or a traditional telephone is plugged into the RJ11 jack. According to the detection, the telephone can be connected to the Internet for making and answering a VoIP call via the computer; the computer can be connected to the Internet for making and answering a VoIP call via the modem element; or the computer can make/answer a call to/from the PSTN.

Abstract: An auto-swap call box device for VoIP telephony and a method of automatically swapping line connection, in which the control module of the call box controls a subscriber line interface circuit module, a line interface module, and a switch module to sequentially detect the electrical signal of a first phone line socket and the electrical signal of a second phone line socket, so as to set a first sense logic value and a second sense logic value, based on which by the control module the line connections to the first and the second phone line socket are routed.

Abstract: A method of switching between a VoIP call and a traditional call, involving the use of a caller terminal, a call box device, a first computer device, a second computer device, and a receiver terminal. A VoIP connection has to be established before the caller terminal and the receiver terminal can engage in a VoIP call. If the VoIP connection is successfully established, a computer device electrically connected to the caller terminal monitors the Internet quality between the caller terminal and the receiver terminal. If the Internet quality is poor, upon the pressing of a predetermined key, the caller terminal alternatively connects to the receiver terminal via a PSTN call through the switching of the call box device, which is electrically connected to the receiver terminal.

Abstract: An Internet telephony call box device implemented with a single SLIC module, which includes a first line connector, a second line connector, a switch module, a SLIC module and an LI module. A control module controls the switch module to switch a connection of the first line connector, the second line connector, the SLIC module and the LI module to thereby enable a conventional phone to make/answer a regular or VoIP call. The LI module includes a protection and rectification unit, a line status monitor unit, a ring detection unit and an off-hook emulation unit, which cooperate with the SLIC module to achieve the functions of the prior SLIC and DAA modules.

Abstract: A full-wave rectifying device having an amplitude modulation function receives energy emitted from a transceiver via an external antenna and then rectifies it into a DC power source for use by an IC device. One embodiment includes a positive half-wave diode and a negative half-wave diode, whose anodes are connected to ends of the antenna and whose cathodes are formed by the N-substrate. A rectifying NMOS transistor has its gate and drain coupled to ground and its source connected to the anode of the negative half-wave diode. A positive half-wave switch is coupled between the source and bulk of the rectifying NMOS transistor. A negative half-wave switch is coupled between the drain and bulk of the rectifying NMOS transistor.