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Network sounding device and method for detecting public switched message network

A telecommunication network and VoIP technology, applied in the direction of telephone communication, interconnection devices, electrical components, etc., can solve problems such as the inability to determine VoIP services and the inability of ISPs to determine line problems.

Inactive Publication Date: 2007-02-28
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, ISPs cannot tell whether the VoIP service offered is combined with PSTN
In addition, when the ISP provides VoIP services combined with PSTN, if there is a problem with the line, the ISP cannot determine whether the line problem is caused by the PSTN line or the VoIP telephone network line.

Method used

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  • Network sounding device and method for detecting public switched message network
  • Network sounding device and method for detecting public switched message network

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Embodiment Construction

[0011] FIG. 1 is a functional block diagram of the voice communication system of the present invention. In this embodiment, the system includes a Voice over Internet Protocol (VoIP) device 100 , a phone 200 and a network 300 . Wherein, the network 300 includes a VoIP telephone network and a public switched telecommunication network (Public Switched Telephone Network, PSTN) or only includes a VoIP telephone network. The VoIP device 100 is used to connect the phone 200 to the network 300 .

[0012] VoIP device 100 comprises: a first communication interface 101, a relay circuit (RelayCircuit) 102, a first switch 103, a subscriber line interface circuit (Subscriber Line InterfaceCircuit, SLIC) 104, a digital signal processor (Digital Signal Processor, DSP) 105, main processor (CPU) 106, a second communication interface 107, an off-hook detection circuit (Off-hook Detection Circuit) 108, a polarity detection circuit (Polarity Detection circuit) 109, a ring A ring detection circui...

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PUM

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Abstract

The invention relates to a method for detecting public switched telephone network, used in network voice device. Wherein, said method comprises: the network voice device enters into PSTN mode; supplying one virtual load circuit and one suspension detecting circuit; coupling the virtual load circuit to the PSTN; using suspension detecting circuit to detect one dial sound; based the dial sound, fixing the state of PSTN.

Description

【Technical field】 [0001] The invention relates to the field of voice communication, in particular to a network voice device and a method for detecting the public switched telecommunication network. 【Background technique】 [0002] With the rapid development of the Internet, Voice over Internet Protocol (VoIP) telephony has been implemented. VoIP is to transmit the original analog sound signal in the form of "Data Packet" on the Internet Protocol Network (IP Network) in real time. In other words, the VoIP system is to digitize the original sound analog signal. Afterwards, the end-to-end real-time communication function is implemented through various relevant communication protocols on the Internet. The outstanding advantage of VoIP service is that its call cost is lower than that of Public Switched Telephone Network (PSTN). However, VoIP service is limited by many factors on the Internet, and its call quality is relatively unstable. While the PSTN service has high call charg...

Claims

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Application Information

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IPC IPC(8): H04M7/00H04L29/06
Inventor 黄光毅林玉诚
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD