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Improved media gateway

A gateway and media conversion technology, applied in the gateway field, can solve problems such as expensive hardware implementation and complexity, and achieve the effect of reducing bandwidth costs and large address space

Inactive Publication Date: 2007-04-25
ALCATEL LUCENT SAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such solutions either lead to CPU involvement in the data path, resulting in a "slow path" with e.g. )

Method used

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Examples

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Embodiment Construction

[0038] FIG. 1 shows two telecommunication networks 1 , 2 connected to a gateway 3 . The telecommunication network 1, 2 can be of different types, e.g. the telecommunication network 1 can be a conventional circuit switched network such as PSTN and the telecommunication network 2 can be a packet switched network, for example an IP network like the Internet (PSTN = Public Switched Telephone Network) . Gateway 3 transfers media such as voice, audio or video information from one type of network to another. For example, at the interface of an ISDN network and an IP-based network, a gateway can terminate a circuit-switched channel of the ISDN network and generate, from the voice information contained therein, an RTP media stream to be sent over an IP-based packet network (ISDN = Integrated Services Digital Network ).

[0039] The gateway functionality enabling the interconnection of different network types can be represented by a media gateway 31 , a media gateway controller 32 and...

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Abstract

A gateway for connecting a public switched telephone network and an Internet Protocol network, comprising at least one interface unit with the public switched telephone network, at least one interface unit with the Internet Protocol network, and at least one processing unit for media conversion between the public switched telephone network and the Internet Protocol network, whereby one or more of said interface units and / or processing units are adapted to communicate gateway-internally via an Ethernet switch for internal packet switching, using an internal connection oriented layer with virtual connection identifiers.

Description

technical field [0001] The present invention relates to the transmission of packet data, and in particular to a gateway for its internal workings through the use of virtual connection identifiers. Background technique [0002] Media Gateways within Next Generation Networks (NGN) use packet technology for voice transmission, so-called Voice over Packet (VoP). The packet technology may use a connection-oriented technology such as AAL1, AAL2, MPLS or FR as transport technology (AAL=ATM Adaptation Layer; ATM=Asynchronous Transfer Mode; MPLS=Multiprotocol Label Switching; FR=Frame Relay). Likewise, packet technology can use technologies such as IP / Ethernet or IP based on AAL5 as transport technology (IP=Internet Protocol). [0003] In addition, the high-density media gateway system structure must deal with the difficult problem of distributed structure including distributed terminals of different protocol layers. In this environment, reliability requirements, which are known fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/66
CPCH04L65/103H04L29/06244H04L65/104H04L29/06265H04M7/125H04L29/06027H04L65/1101
Inventor C·魏茨曼
Owner ALCATEL LUCENT SAS
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