Technical advantages of Softswitch

The Softswitch technology is still quite commonly used. So I studied the advantages of the Softswitch technology from two aspects. I would like to share it with you here and hope it will be useful to you. Although the current Softswitch technology is still at a distance from the expected level, there are still some such problems, but it also has some characteristics or advantages compared with the traditional circuit switching network.

The development of Softswitch technology has many advantages. For example, Softswitch technology truly achieves a layered network structure, ensuring high reliability and flexible networking methods, provides a variety of solutions, more new business provision means to create new sources of income, a centralized and intelligent network management system, flexible access methods, and more new business provision means and shorter business cycle, terminal personalization and intelligence.

1. Flexible access methods for Softswitch networking

Since China's telecom industry has changed from the original exclusive operation of China Telecom to the current 5 + 1 pattern, the competition has become more intense. At present, operators no longer blindly invest in the past, but invest according to the company's development direction after actual research and investigation. After several years of ups and downs in China, some operators have gained a new understanding of IP phones and believe that H.323 IP phones will not replace the traditional circuit switching network, however, H.323 IP phones can be used as a supplement to the traditional long-distance circuit switching network to provide services with poor service quality but low prices to specific user groups. For high-end users with high service quality requirements, the circuit switching network is required to provide services to users.

For carriers, the temptation of softswitch or NGN is not that the price of long-distance IP phones is cheap, but that it uses the unique technology of softswitch to put a five-category line to users' homes and offices, we can provide a complete set of solutions for voice, data, video, and multimedia services, instead of providing voice services to users using traditional operation models, and placing a pair of copper wires in users' homes or offices, providing users with data or having to access the Internet and placing network cables on users' houses or offices is unacceptable for users. Softswitch is highly competitive to provide new services to new operators or operators without the Internet.

2. New business provision Methods

There are two main types of services in traditional telephone networks: basic services provided by switches, supplementary services, smart services, and intelligent services provided by intelligent networks. With the adoption of Softswitch technology, more services are provided and more services are provided, and the service delivery cycle is shortened accordingly.

1) Services provided by Softswitch

The Softswitch technology inherits the basic and supplementary services of the original telecommunication network of the PSTN/ISDN, this service can be used to supplement telephone, fax, number recognition, call provision, call completion, multi-party communication, and Centrex services, it can also work with other entities in the network to provide new services.

2) Services provided in combination with the Internet

◆ Personalized management of your business

The user logs on to a Web server online, configures various services of the user, and then loads the configured services to the application server or SoftSwitch. For example, you can configure various call forwarding data through the Internet, and configure call filtering to selectively answer and reject calls.) configure the ringtone according to the incoming call, when the called user registers multiple connection numbers, you can configure the connection mode and order.

◆ Multimedia services

The network does not provide simple voice services, but also various media services. For example, the multimedia video service actively pushes Web pages to the other Party through text-based instant messaging services that chat online between different users to implement the PUSH Service for browsing at the same address, cross-Region Collaborative Work is achieved through whiteboard, file transfer, clipboard sharing, online games, and other means.

3) Services provided by the Application Server

The intelligent service provided by the traditional telephone exchange network executes the business logic under the control of the business control point SCP after the business exchange point detects the trigger point. As the signaling gateway implements intercommunication between the softswitch and the No. 7 signaling network, the softswitch can access the SCP in the No. 7 signaling network. Therefore, the Softswitch technology can also trigger services defined in the intelligent network. If these intelligent network services are defined on the application server, these services are also provided. It differs from the traditional intelligent network service in that the business procedure of the traditional intelligent network service is transmitted on the MTP/SCCP of the No. 7 signaling network, the application procedures of such businesses are transmitted at the IP-based transport layer. The application server can also provide users with personalized services, such as providing personalized greetings for different callers, and sending calls based on Time Of Day) and DOW (Day Of Week) to shield services.

4) Services provided by third parties

In the networking architecture of Softswitch technology, application servers and third-party servers are included in the business application layer. That is to say, future services can be provided by telecom operators on application servers, or authenticated third parties on third-party servers. The specific implementation method is that the telecom operator provides an Application Programming Interface API to a third-party Application Server), and the third-party server uses the API to implement the business. The API is an abstract interface that shields specific network resources such as SIP, INAP, and MAP, it includes call control, user interaction, mobility, terminal capabilities, and billing. Parlay is an API. The ing between APIs and network resources is implemented by API gateway, which can be completed by the application server or an independent API gateway. Third parties that provide services do not care about complex network resources. Instead, they use more advanced API interfaces to implement business logic and quickly and flexibly generate and control various new services, however, loading new services has little impact on the entire system and is not as complex as upgrading traditional switches. telecom operators do not need to operate networks or maintain services.