Method for reorienting network communication port and network communication system

Abstract

A method for redirecting network communication port and a network communication system thereof are disclosed. When a receiving end determines that a communication port needs to be redirected, the receiving end sends a redirected address to a transmitting end via a communication port. The redirected address includes redirected address information of a transport layer. The redirected address may also include address information of a network layer of a receiving end which can be reached via a communication port corresponding to the redirected address information of the transport layer. The address information of the network layer of the receiving end includes the address of a network layer of the original receiving end, the address of a network layer of the new receiving end capable of managing the transmitting end, or the address of the network layer of the receiving end supporting the new protocol. According to the present invention, when the gatekeeper is not able to receive, via a well-known port, some of signaling sent from a node, the gatekeeper can inform the transmitting end to switch the port automatically, allowing thereby the node to continue the previous service. The present invention further allows the node to perform protocol switching automatically.

Description

technical field [0001] The invention relates to the communication field, in particular to port redirection technology. Background technique [0002] The H.323 (ITU Recommendations on Packet Multimedia Communication System) series of protocols suggested by the ITU (International Telecommunications Union; International Telecommunication Union) is currently the main multimedia communication standard. The H.323 communication system based on the H.323 protocol includes two components: a gatekeeper (Gatekeeper) and an endpoint (Endpoint). Among them, the gatekeeper is the manager of the entire H.323 communication system, responsible for completing functions such as area management, access control, address resolution, and bandwidth management. The endpoints include nodes, gateways, MCU (Multipoint Control Unit; Multipoint Control Unit), etc., and all need to perform RAS (abbreviation of Register Call Access Signaling, H. .323 agreement between the gatekeeper and the communication...

AI Technical Summary

Problems solved by technology

However, when the node has registered to the SIP proxy server and needs to switch to the H.323 gatekeeper for some needs; or has registered to the H.323 gatekeeper and needs to switch to the SIP proxy for some needs On the server, the switching speed is slow and not flexible enough by using the above method of manually switching protocols

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