Evolution system and method of public switched telephone network

Abstract

The device and method reuses existed equipment and network resources as much as possible. Thus, the method possesses features of lower cost, higher reuse rate of exchanger and software, and reduced difficulties of engineering construction. Core of the system and method is as following: first, being modified to operation switching point, the exchanger in cross-office possesses function of operation switching; according to different condition, calls are triggered to relevant operation control point, where operation process is carried out; next, through data configuration, exchanger in cross-office forwards all operations to operation switching point in cross-office by using call forwarding function, without need of upgrading exchanger in cross-office; then, operating account center obtains operation information in use for charging from operation switching point.

Description

technical field [0001] The invention relates to the communication field, in particular to the evolution technology of the public telephone switching network. Background technique [0002] In the current telecommunications service networks, the public switched telephone network (Public Switched Telephone Network, referred to as "PSTN"), which is based on bearer, control integration and circuit switching, provides most of the fixed voice and other telecommunications services. Telecom users and operating income. The advantage of the PSTN network lies in the huge network infrastructure and the huge number of users; the voice quality of service (Quality of Service, referred to as "QoS") is good; the business is rich. [0003] However, with the integration trend of the industry, the telephone network, computer network, and cable TV network tend to be integrated, and the pressure on the network is increasing. The network is faced with increasing load and diversification of servic...

AI Technical Summary

Problems solved by technology

[0020] 1) This evolution mode requires all traditional program-controlled switches to be upgraded, and the cost is relatively high;

[0021] 2) Many traditional program-controlled switches cannot be upgraded due to various historical reasons such as the manufacturer and the technology used, so they must be replaced directly, and the reuse rate is not high;

[0022] 3) Most of the software in traditional program-controlled switches is no longer useful

[0032] 1) This evolution mode requires all switches to be upgraded, and the cost is high;

[0033] 2) The cost of transformation is high: the models on the existing network are complex and numerous, and some of them must be upgraded, and some old and weak models are difficult to support even if they are upgraded;

[0034] 3) High collection cost: It is necessary to realize the connection of online billing for many switch systems. Due to the number, model, and software version of switches, the investment cost and technical difficulty become a major barrier

[0035] 4) Difficulty in project implementation: For switches from many different manufacturers, different models, and versions to enter the entire network project, the cycle is long and the project implementation is difficult

[0036] All in all, this solution also requires telecom operators to immediately upgrade the software and hardware of all program-controlled switches on the previous PSTN network. It also requires too high requirements for the transformation of the existing network of telecom operators, and the risk is relatively high.

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