Telephone apparatus between public switched telephone network and telephone network according to Internet speech sound protocol

Abstract

The invention is used for providing automatic or selectable dialing function for the public switched telecommunication network (PSTN) and VoIP telephone network, and for either incoming call or outgoing call.

Description

technical field [0001] The invention relates to a telephone system, in particular to a telephone device applicable to the public switched telecommunication network and the Internet voice protocol telephone network. Background technique [0002] Voice over Internet Protocol (Voice over Internet Protocol; VoIP) is a protocol that uses an open network to transmit audio / video, and uses packetized (Packet) signals to provide call services, just like using the Internet to transmit information. It can save a lot of telephone charges. However, the voice over Internet protocol is limited by many factors on the Internet, and the quality of the call is relatively unstable, which may cause problems such as unclear signal or disconnection. [0003] Traditional telephones have been widely used in daily telephone communications. Analog telephones are coupled to the Public Switched Telephone Network (PSTN) to provide call services. Although traditional telephones are expensive, they do not ...

AI Technical Summary

Problems solved by technology

For example, the traditional telephone used in the home is to use a line to connect the home telephone and the exchange of the telecommunications bureau. The FXS terminal 110 is the port connected to the telephone, and the FXO terminal 120 is connected to the public switched telecommunications network (PSTN) 130. Port, under normal operation, the relay 100 is opened (the FXS terminal 110 and the FXO terminal 120 are not conducting), through the Voice over Internet protocol module 140, provide the dialing of the VoIP phone (VoIP phone) 150, and connect to the Voice over Internet protocol Telephone network (VoIP Network) 160, the disadvantage of this design is that the VoIP phone 150 only provides a bypass circuit, that is to say, when the power supply is interrupted, the relay 100 is turned off, and the FXS terminal 110 and the FXO terminal 120 are turned on, and the dial is dialed through the relay 100. Traditional telephone, so, by means of the hardware switching of relay 100, it is impossible to dial and connect the communication of Voice over Internet Protocol telephone network (VoIP Network) 160 and Public Switched Telecommunications Network (PSTN) 130 at the same time

[0006] FIG. 2 is a known block diagram of using a Direct Access Arrangement (DAA) device to detect a Voice over Internet protocol device and a traditional telephone. The Direct Access Arrangement (DAA) device 170 is used to couple the Voice over Internet protocol module 140 and The public switched telecommunication network (PSTN) 130 can simultaneously provide voice over Internet protocol telephone network (VoIP Network) 160 and the public switched telecommunication network (PSTN) 130 dialing under the situation of not needing traditional telephone, but, when the power is interrupted, Only the power provided by the public switched telecommunication network (PSTN) 130 cannot satisfy the power supply of the entire network telephone set 150. Therefore, when the power supply is interrupted, an additional traditional telephone must still be provided for dialing, and a single telephone set cannot operate on the power supply. Dial-up on interruption

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