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Method for realizing communication between equipments in network

A technology between devices and devices, applied in the field of multimedia communication, can solve the problems that the devices in two private networks cannot communicate with each other, and the communication between devices in the public network cannot well meet the requirements of service quality. achieve simple effects

Active Publication Date: 2009-12-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a method for realizing communication between devices in the network, so as to solve the problem that the communication between devices in the public network in the prior art cannot well meet the service quality requirements, and there are two private networks when both use NAPT. The problem that devices in the network cannot communicate with each other

Method used

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  • Method for realizing communication between equipments in network
  • Method for realizing communication between equipments in network
  • Method for realizing communication between equipments in network

Examples

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Embodiment Construction

[0028] In the present invention, when the first device calls the second device, the call request is routed to the call control unit; the call control unit controls the first device and the second device to respectively establish a call with the multimedia switching device and open a logical channel; then the first device and the The second device respectively sends the media stream to the multimedia switching device; the multimedia switching device forwards the multimedia stream sent by the first device to the second device, and forwards the multimedia stream sent by the second device to the first device . In this way, the communication quality can be guaranteed when both the first device and the second device are public network devices, and the multimedia stream can be passed through when one or both of the first device and the second device are devices in the private network. NAT / NAPT device, realize the intercommunication between two devices.

[0029] In this embodiment, t...

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Abstract

The method includes following steps: first device requests a call control unit to call second device; the said call control unit controls the first and second devices to build a call with multiple media exchange equipment respectively; and open a logic channel; the first device and the second device sends media stream to the said multiple media exchange equipment respectively; the multiple media exchange equipment forwards the multiple media stream sent from the first device to the second device, and forwards the multiple media stream sent from the second device to the first device.

Description

technical field [0001] The invention relates to multimedia communication technology, in particular to a method for realizing communication between devices in a network. Background technique [0002] In the prior art, multimedia communication protocols all involve the transmission of signaling and media streams, and no matter whether it is Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) messages, on the premise of no outgoing messages, ordinary network addresses The translation (NAT) device has no way to identify which IP address and segment port in the private network the incoming packet should be forwarded to, so the packet sent from the public network to the private network will be rejected by NAT, eventually resulting in Failure of multimedia communication. [0003] NAT device address translation methods are divided into: static NAT translation, dynamic NAT translation and network address and port translation (NAPT). There are three solutions for tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/54H04L12/66H04L29/06
Inventor 危自强
Owner HUAWEI TECH CO LTD
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