Future Development of Network Data Exchange Technology

When talking about the development of network data exchange technology, it is not necessary to mention the Softswitch technology. The integrated business digital network is a network integrating voice, data, text fax, visual telephone, and other services, it is applicable to different bandwidth requirements and diverse business requirements. Asynchronous Transfer Mode (Asynchronous) is a network data exchange technology used for Broadband Integrated Business digital networks.

ATM is developed based on group exchange. It uses a fixed-length group and idle cells to fill the channel, so that the channel is waited for a long time. Because optical fiber communication provides a transmission channel with low error rate, traffic control and error control can be moved to the user terminal. The network is only responsible for information exchange and transmission, thus reducing transmission latency. Therefore, a t m is suitable for high-speed data exchange services.

With the development of communication technology and communication business demand, the telecom network must develop in the direction of Broadband Integrated Business Digital Network (B-ISDN. This requires that communication networks and switching devices not only need to accommodate non-real-time data services, but also real-time telephone and television signal services. In addition, they must meet the requirements of high burstable and instantaneous business volumes, improve communication efficiency and economics. Under such communication conditions, traditional circuit switching and group switching are not competent. The main disadvantage of circuit switching is the lack of flexibility in channel bandwidth (rate) allocation and low efficiency in dealing with sudden business spikes. However, group switching is not suitable for real-time communication due to the delay caused by processing operations. Therefore, when researching new transmission modes, we need to find a two-way solution, which can not only make full use of network resources, but also achieve high-quality transmission level for various communication services. This new transmission mode is the "Asynchronous Transfer Mode" (ATM) that emerged later ).

A t m is A new development of Network Data Exchange Technology in the environment of large-capacity optical fiber transmission media. Before using optical cables in large quantities, relay lines in digital communication networks are the most tight and the worst-quality resources. Improving the line utilization and reducing the code are the most important considerations. The extensive use of optical cables not only greatly increases the communication capability, but also greatly improves the transmission quality. This makes people tend to sacrifice part of the line utilization rate to reduce the processing burden of nodes.

At the same time, human demand for communication bandwidth is growing. In particular, the transmission of image information and mass data has increased the rate of data communication from several thousand bits/s to several megabits/s. In this way, the processing capability of nodes becomes a "bottleneck" in the data communication network ". The requirements of a t m for node processing capabilities are much lower than those of the group forwarding method, which is more suitable for modern environments. The emergence of softswitch allows users to simultaneously provide voice, data, and multimedia services through a converged network,

In the t m mode, virtual circuits in group switching are used, and resources to be used for transmission are presented to the network during call establishment, the network determines whether to accept the call based on the current status. It can be said that the t m method not only takes into account the network operation efficiency, but also can meet the needs of access network connections for fast data transmission.

Development Prospect of Computer Network Data Exchange Technology

In recent years. The new technological revolution represented by the Internet is profoundly changing the traditional concept and architecture of telecommunications. With the arrival of the information society, people's daily life and learning work are inseparable from the network, this has led to a dramatic increase in human society's demand for network services and a higher requirement for networks, not only providing voice, data, and video services, it also needs to support the transmission of real-time multimedia streams, and requires the network to have higher security, reliability, and high performance. The next generation network should be an integrated service platform that can shield the diversity of underlying communication infrastructure and provide a unified, open, scalable, secure, stable, and high-performance service, it supports fast and flexible development, integration, customization, and deployment of new network services.

The Next Generation Network will be an open and integrated network with Softswitch as the core, optical network as the basis, and grouped transmission technology. Achieving the seamless integration of network resources such as interconnected telecommunication networks, computer networks, and television networks proposed by ITU to form an efficient network with unified access and application interfaces, the goal of enabling human beings to securely enjoy information applications in multiple ways at any time and location at an acceptable cost and quality.