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Method for interconnection switching between digital chain and connectors between VOIP networks

A network connector and digital technology, applied in the direction of interconnection devices, network connections, data exchange networks, etc., can solve the problems that the additional functions of PBX cannot be used, and the transfer trunk lines cannot be connected one by one.

Inactive Publication Date: 2004-12-15
NEC PLATFORMS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, the transfer trunks in the PBX cannot be connected in one-to-one correspondence, so the additional functions of the PBX cannot be used

Method used

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  • Method for interconnection switching between digital chain and connectors between VOIP networks
  • Method for interconnection switching between digital chain and connectors between VOIP networks
  • Method for interconnection switching between digital chain and connectors between VOIP networks

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Embodiment Construction

[0017] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0018] FIG. 1 shows a tandem switching system to which a VoIP gateway device according to an embodiment of the present invention is applied. Figure 1 shows only the part relevant to the speech signal. The VoIP gateway device according to the present invention conforms to ITU-T (International Telecommunication Union-Telecommunications Standardization Sector) H.323, and adopts an efficient coding scheme conforming to ITU-T G.729.

[0019] The tandem switching system shown in Fig. 1 is connected by telephone sets 510-512, the switch 20 connected with the telephone set 210, the switches 50-52 connected with the telephone sets 510-512 respectively, and the VoIP network connection connected with the switch 20 Devices (VOIP GWs) 10-12, VoIP gateway devices (VOIP GWs) 40-42 connected to switches 50-52 respectively, used to connect VoIP gateway devices 10-12 to VoIP net...

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Abstract

A VoIP (Voice over IP network) gateway device includes an identification pattern inserting section, identification pattern detecting section, pass through frame assembly section, and pass through frame processing section. The identification pattern inserting section inserts an identification pattern of a predetermined bit pattern in a receiving signal from an IP transit trunk, and sends out the signal to a digital exchange. The identification pattern detecting section detects an identification pattern from a receiving signal from the digital exchange. The pass through frame assembly section converts an RTP (Real-time Transport Protocol) packet obtained from the IP transit trunk into a digital voice signal in a pass through frame format having a bit rate of 64 kbps when the identification pattern detecting section detects an identification pattern. The pass through frame processing section converts a digital voice signal in the pass through frame format received from the digital exchange into an RTP packet when the identification pattern detecting section detects no identification pattern. A digital one-link tandem exchange method is also disclosed.

Description

technical field [0001] The present invention relates to a kind of VOIP (Voice over IP network) gateway device and digital single-link tandem exchange method, this method has adopted the voice compression technology and Packet transmission technology, more specifically related to a VOIP (Voice on IP network) gateway device and digital single-link tandem switching method, the method adjusts multiple IP (Internet Protocol) transit trunks, the gateways are set between digital switches and digital transit trunks with different transmission bit rates for efficient encoding / decoding and packet transmission of digital voice signals, so that in these digital Digital voice signals are exchanged between the trunk and other digital transfer trunks or extensions within the station. Background technique [0002] More recently, high-efficiency voice coding has been applied to transmission lines in long-distance dial-up networks employing switches or PBXs. Due to the degradation of speech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/00H04L12/66H04L12/70H04M7/00H04Q11/04
CPCH04Q2213/13216H04Q2213/13204H04Q2213/13296H04Q2213/13389H04Q2213/13352H04Q11/04H04Q2213/13292H04Q2213/1336H04Q2213/13034H04Q2213/13174H04M7/125H04Q2213/13196H04L12/66
Inventor 石井淑绘水泽常利
Owner NEC PLATFORMS LTD