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
View PDF0 Cites 0 Cited by
  • 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 PS

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Network sounding device and method for detecting public switched message network
  • Network sounding device and method for detecting public switched message network

Examples

Experimental program
Comparison scheme
Effect test

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 circuit (

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap