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Method for establishing an emergency call in a local information network, terminal and server for such a method

An emergency call and local area network technology, applied in the direction of instruments, alarms, network interconnection, etc., can solve problems such as damaged calls and local area network saturation

Active Publication Date: 2009-07-08
WSOU INVESTMENTS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calls not destined for the emergency call center can saturate the LAN, compromising calls destined for the emergency call center

Method used

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  • Method for establishing an emergency call in a local information network, terminal and server for such a method
  • Method for establishing an emergency call in a local information network, terminal and server for such a method

Examples

Experimental program
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Embodiment Construction

[0033] Such as figure 1 As shown, this embodiment mainly comprises a computer local area network LAN, preferably of the Ethernet type on the link layer and of the TCP / IP type on the transport / network layer. A telephone exchange IPBX is connected to this local area network LAN to exchange telephone connections. Various types of telephone terminals are directly or indirectly connected to this local area network LAN:

[0034] - Fixed telephone terminals IPP1, IPP2 of Voice over Internet Protocol (VOIP) type, which transmit voice signals in Internet Protocol packets and are directly connected to the local area network LAN.

[0035] - Mobile telephone terminals MT1, MT2, for example of the WiFi type, connected to the local area network LAN via standard WiFi wireless access points AP1, AP2.

[0036] - Fixed analogue telephone terminals, such as terminals POT1, connected to the local area network LAN via a standard gateway GW1 for digitizing, compressing and converting analogue voi...

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PUM

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Abstract

The method involves attributing a telephone terminal (IPP1), which request establishment of an emergency call, to virtual networks having a priority greater that that of any virtual network to which a terminal requesting establishment of a non-emergency call is attributed. A message is forwarded from an emergency call center (PSAP) towards the terminal (IPP1) via one of the virtual networks. Independent claims are also included for the following: (1) a telephone terminal having an attribution unit for attributing the terminal to virtual networks (2) a gateway permitting to connect an analog or synchronous digital telephone terminal to a local area network (3) an emergency call server for establishing an emergency call between a terminal and an emergency call center via a local area network (4) a gateway permitting to connect a terminal to an emergency call center during a communication.

Description

technical field [0001] The present invention relates to the transfer of emergency calls in a computer local area network. It is increasingly common for businesses to use the Internet Protocol as the network protocol to transmit telephone calls using computer local area networks. Background technique [0002] A computer local area network can be divided into several virtual networks that define groups of terminals that can exchange data between them, regardless of the physical structure of the network. For security reasons, it is also possible to restrict or prohibit data exchange between terminals belonging to different groups. A virtual network is simply a subnet defined by logical means. [0003] The IEEE 802.1Q standard describes how to define virtual networks in Ethernet. According to one of the methods described in this standard, a terminal sending a data packet in a virtual network associates with this packet a label comprising the identifier of the virtual network....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B25/00H04L12/46H04M11/04H04L29/08
CPCH04L12/4679
Inventor R·加斯M·勒克莱夫
Owner WSOU INVESTMENTS LLC
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