Communication system with dialog board controller and its command transmitting method

Abstract

A method of transmitting a signaling packet in a communication system with session border controller SBC comprises that: a user device sending a signaling packet with a register request to a signaling static translation function entity in a first network; after the signaling static translation function entity receives the signaling packet, modifying the destination IP address / port number of the signaling packet to the IP address / port number of the signaling control function entity according to a mapping relation of the IP address / port number of the signaling static translation function entity which is preset or obtained by other mode and the signaling control function entity, and modifying the source IP address / port number to the IP address / port number distributed by the signaling static translation function entity itself, and then sending this signaling packet to the signaling control function entity. The signaling static translation function entity sets network address transformation (NAT) table item of the signaling packet of the user device. The table item is the corresponding relation of the IP address / port number in the first network and the IP address / port number distributed by the signaling static translation function entity itself. The signaling control function entity analyzes the signaling packet and sends to the function entity in a second network. At the same time, the invention also discloses a communication system with a Session Border Control (SBC). The invention can effectively prevent from the malice attack on the signaling control function entity in the SBC by the user, and makes the system to be more secure and enables the SBC to be more flexible without the restriction from the networking in the actual network.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication network with a session border controller (SBC) and a signaling transmission method thereof. Background technique [0002] SBC is a concept proposed by the Internet Task Force (IETF) organization. It is called Session Border Controller (Session Border Controller) and is used to solve the border control problem of border session services in the next generation (NGN) network, such as access network and core The border control of the backbone network, the border control between the core backbone network and the core backbone network, or the border control between different management domains / address domains, is used to solve the intercommunication between different management domains and address domains, network security, and service Quality (QoS) control and other issues, such as the different address domains between different networks (access network, backbone...

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Problems solved by technology

[0016] In view of this, the object of the present invention is to provide a communication network with SBC and its signaling transmission method, so that the large-capacity centralized signaling control functional entity can shield the access user equipment, and reduce the number of signaling control functional entities. Potential safety hazards, while solving the above-mentioned problems that cannot be applied in actual networking

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