Network telephone gateway and emergency call processing method thereof

A technology for Internet telephony and emergency calls, which is applied in the directions of telephone communication, electrical components, and special services for subscribers.

Active Publication Date: 2016-02-17
AMBIT MICROSYSTEMS (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Doing so will cause some risks. For example, if the ringing of PSTN cannot be detected, the VoIP gateway will not switch back to PSTN, which will eventually cause serious consequences that emergency calls cannot be connected.

Method used

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  • Network telephone gateway and emergency call processing method thereof
  • Network telephone gateway and emergency call processing method thereof
  • Network telephone gateway and emergency call processing method thereof

Examples

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Embodiment Construction

[0034] refer to figure 1 , which is an application environment diagram of an embodiment of the VoIP gateway 20 of the present invention. In this embodiment, the Internet phone 10 is connected to the Internet phone gateway 20 in the IP network 30. When the Internet phone (VoiceOverInternet, VoIP) 10 dials an ordinary phone, the Internet phone 10 encodes the voice data by a voice compression algorithm. Compression processing, then these voice data are packed according to TCP / IP standard, data packet is sent to receiving place through IP network 30, these voice data packets are strung together again, after decompression processing, recover into original voice signal, thereby To achieve the purpose of transmitting voice through the Internet. In this process, the Internet telephone gateway 20, the core and key equipment of Internet telephony, maps the area codes of each area telephone to the IP address of the corresponding regional Internet telephone gateway, and stores it in a da...

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PUM

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Abstract

The invention discloses a network telephone gateway. The network telephone gateway comprises a determining module and a switching module. The determining module receives a telephone number a user needs to dial or answer and determines whether the telephone number is an emergency telephone number in an emergency call list. The switching module, in case that the telephone number is an emergency telephone number and a conversation network is an IP network, switches the conversation network into a public switched telephone network, realizes an emergency call through the public switched network, records duration of connection maintained with the public switched telephone network after the emergency call ends, and switches the conversation network into the IP network after the duration exceeds a preset time period. According to the network telephone gateway and the emergency call processing method thereof, provided by the invention, such situations can be avoided that the network telephone gateway fails to be switched to the public switched telephone network due to incapability of detection of a reply call of the public switched telephone network and the like, and it is ensured that the reply network call of the public switched telephone network can be normally answered.

Description

technical field [0001] The invention relates to the field of Internet telephony, in particular to an Internet telephony gateway and a method for processing emergency calls. Background technique [0002] At present, the method of general VoIP (VoiceOverInternetProtocol, VoIP) to make an emergency call is to switch the call to the Public Switched Telephone Network (PublicSwitchedTelephoneNetwork, PSTN) through the VoIP gateway in the Internet Protocol (InternetProtocol, IP) network. Switch back to the default IP network. If the emergency call service center calls back, the VoIP gateway needs to switch back to PSTN to answer. Doing so will cause some risks, for example, if the ringing of PSTN cannot be detected, the VoIP gateway will not switch back to PSTN, which will eventually cause serious consequences that emergency calls cannot be connected. [0003] A new technology is designed in this case. After the user makes an emergency call, the VoIP gateway will remain on the PS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M7/12H04M3/42
Inventor 郭松
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD
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