Large-scale telephone stored program control exchange set networking system and communication method thereof

Abstract

The invention discloses a large-scale telephone stored program control exchange set networking system and a communication method of the large-scale telephone stored program control exchange set networking system. The system comprises a calling management server and at least one telephone stored program control exchange, wherein each telephone stored program control exchange is connected with a corresponding IP (Internet Protocol) gateway and the calling management server in a manner of networking; an unified routing table is configured in the calling management server; each extension telephone of each telephone stored program control exchange has a unique extension telephone number in the routing table corresponding to PSTN (Public Switched Telephone Network) office number; once an external call incomes, the calling management server establishes the communication between the extension telephone of the calling party and the extension telephone of the called party based on the extension telephone number corresponding to the extension telephone of the called party and the PSTN office number. The system can be conveniently and quickly arranged without influencing the use of original service; the routing is unified; and internal telephone cornet allocating is carried out; the current equipment network can be utilized, so as to maximize the investment; the current PBX (private branch exchange) does not need to be replaced via IP-PBX equipment, so that the investment can be protected to the maximum extent; the system can be easily maintained and managed; in maintaining, the route of the whole network can be simply managed by maintaining the calling management server.

Description

technical field [0001] The invention relates to telephone communication networking technology, in particular to a large-scale telephone program-controlled exchange networking system and a communication method thereof. Background technique [0002] Telephone program-controlled exchange (PBX) has been widely used in various industries as a necessary means of communication. Many large and medium-sized enterprises have deployed PBXs of different manufacturers and models in various branch offices for local communication. Most of the currently known Traditional PBX is limited by the technology itself: such as figure 1 As shown, a company has branches in Beijing, Shanghai, and Guangzhou. The branches use different types of PBXs, and each application has a trunk line as the switchboard number. In the figure, the PBX device of the Beijing branch is 200, the PBX device of the Shanghai branch is 300 and PBX equipment 400 of the Guangzhou branch is respectively connected to PSTN 100 (p...

AI Technical Summary

Problems solved by technology

With this method of calling, each PBX is independent of each other, and it is impossible to realize convenient, fast and low-cost networking communication between PBXs

[0003] Although some enterprises have used IP-PBX as the communication method of their subsidiaries, there are still defects in their networking methods: such as figure 2 As shown in the figure, the PBX equipment 200 of the Beijing branch, the PBX equipment 300 of the Shanghai branch, the PBX equipment 400 of the Guangzhou branch, and the PBX equipment 600 of the Shenzhen branch adopt a cross-connection networking mode. Between networking, each system must maintain an independent routing table, making the whole system very complicated

The above networking method is suitable for the situation where there are relatively few branches. When there are many branches, the information of one branch will be changed, which will cause the routing tables of all other branches to be updated, which reduces the efficiency and the reliability of the system. maintainability

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