Method and system for constructing communication links and local user exchange device

Abstract

The invention discloses a method and system for constructing communication links and a local user exchange device, and relates to the technical field of communication. The method and system aim to save relay resources and reduce workload for operators when the operators provide communication service for users. The method is applied to a communication system which comprises a calling terminal, a called terminal, the local user exchange device and an operator network. The local user exchange device is connected with the operator network through a wireless network packet domain, the method is executed by the local user exchange device, and the method comprises the steps that a calling number of the calling terminal and a called number of the called terminal are obtained, and an SIP calling message is generated according to the calling number and the called number; the SIP calling message is sent to the operator network through the wireless network packet domain, and therefore the operator network calls the called terminal through the SIP calling message. The method can be applied to the communication link construction technology.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication link construction method, system and local user switching device. Background technique [0002] In the existing communication technology, a private branch exchange (PBX) is generally used to complete the connection between the user and the operator network. road construction. In the above-mentioned process of using the existing network to construct the communication link, the subscriber switch is connected to the operator's communication network through the northbound interface using relay resources, such as E1 and Synchronous Digital Hierarchy (SDH). When deploying PBX, the operator is first required to configure trunk resources between the PBX and the operator's network, and secondly, it is necessary to lay out the trunk cables between the PBX and the trunk resources equipped by the operator, and between the PBX and the fixed telephone and jumper. In ad...

AI Technical Summary

Problems solved by technology

[0003] In the process of implementing the above-mentioned PBX deployment, the inventors found that at least the following problems existed in the prior art: when the place where the PBX needs to be deployed has no relay resources, the connection between the PBX and the operator's communication network cannot be realized, and it is impossible to provide users with PBX service function

If the user's address changes, the PBX may need to access new trunk resources, which will cause a certain waste of trunk resources, and the workload of operators when deploying trunk resources is relatively large

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