Internet telephony gateway and its method for handling emergency calls

A technology of Internet phone and emergency call, which is applied in the direction of telephone communication, electrical components, interconnection devices, etc., which can solve the problems of emergency calls not being connected, and achieve the effect of ensuring normal operation

Active Publication Date: 2018-09-28
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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  • Internet telephony gateway and its method for handling emergency calls
  • Internet telephony gateway and its method for handling emergency calls
  • Internet telephony gateway and its method for handling emergency calls

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, and when the Internet phone (Voice Over Internet, VoIP) 10 dials an ordinary phone call, the Internet phone 10 compresses the voice data by the voice compression algorithm. Coding and compression processing, and then these voice data are packaged according to the TCP / IP standard, and the data packets are sent to the receiving place through the IP network 30, and then these voice data packets are stringed together, and after decompression processing, the original voice signal is restored , so as 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 corres...

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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 for making an emergency call by a general VoIP (Voice Over Internet Protocol, VoIP) is to switch the call to the Public Switched Telephone Network (PSTN) through the VoIP gateway in the Internet Protocol (Internet Protocol, IP) network. ), the VoIP gateway switches back to the default IP network after the call ends. 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 wi...

Claims

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Application Information

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