Advantages and disadvantages of optical fiber access network and ADSL Access

The development of optical fiber access networks is very rapid and has been widely used in various fields. The advantages and disadvantages of optical fiber access networks and ADSL access are analyzed in detail below. The rapid development of the Internet has led to the further prosperity of the Internet bar industry. The access methods of Internet cafes are also different, and network networking solutions are also varied. At present, the international Internet access solutions include optical fiber, ADSL, satellite broadband access and other broadband access and DDN, ISDN and other narrowband access.

Among the many Internet access methods, Internet cafe operators usually choose fiber-optic access networks or ADSL Network Access. Fiber-optic access network is an ideal access method. However, ADSL Network Access is a network access solution widely used by Internet cafe operators. Why do internet cafe operators choose ADSL Access instead of the desired fiber-optic access network? The following describes the advantages and disadvantages of fiber-optic access networks and ADSL Network access in terms of Internet cafe network performance requirements, access costs, fee levels, and application environment.

According to the network performance requirements of Internet cafes:

Internet cafes have become a huge industry. They have diversified network application types and have higher requirements on network bandwidth, transmission quality, and network performance. Network applications must integrate advanced, multi-service, scalability, and stability to meet customers' needs for simultaneous transmission of voice, video, and data over a broadband network, it also supports a variety of new business data processing capabilities, and enables high-speed access to the Internet. Big data traffic is not dropped or paused. The operation of Internet cafes determines that they must have a high-speed, stable, and secure network system to maintain a sound development.

The optical fiber access network refers to the optical fiber used as the transmission media between the local end and the user. The optical fiber access network can be divided into source optical access and source optical access. The main technology of the optical fiber user network is the optical fiber transmission technology. Fiber-optic access network is an ideal broadband access method, which can solve the problems of broadband access, fast speed, low obstacle rate, and strong anti-interference ability. However, due to outbound bandwidth restrictions, a sharp increase in the number of users on the route will lead to a steep drop in the network access speed. Local disconnection is a common problem.

ADSL is an asymmetric digital user loop technology that uses an existing pair of telephone copper wires to provide users with up to 8 m downstream bandwidth (from the Internet to the user end), upstream (from the user end to the Internet) broadband Access Technology with a maximum bandwidth of kb. ADSL has a high bandwidth and stability, so that you can ride on such a wide road without the feeling of a plug-in, and will not drop the line, so that your surfing life is free and unrestrained. For Internet cafes, due to the large number of nodes in the network and large data traffic, you can apply for multiple ADSL lines to speed up the Internet access and improve the stability and reliability of the entire network, backup function. The optical fiber access network is good, and the speed is fast, but when there are more users, it is easy to drop the cable. ADSL is a dedicated access method, the access speed is stable and independent from the number of online users. I have a friend's Internet cafe (with 60 machines) that often gets offline after switching to the fiber-optic access network. It is a local disconnection, not the entire Internet cafe. In many cases, one or two computers or more than a dozen computers are offline, but other computers are running normally.

This is not the case when ADSL was used in the past. It is because of this problem that the business of friends is inferior to that of the past. I believe this situation will also happen to other Internet cafes. The unique operation method of Internet cafes determines that Internet cafes must have a high-speed, stable, and secure network system. The speed and stability of network access are the problems that must be considered by Internet cafes, ADSL is a little slower than optical fiber, but it is more stable. Therefore, the access method of ADSL is a suitable choice for Internet cafes.

From the perspective of the cost and fee level of the access method:

The initial cost of optical fiber access is relatively high. users need to purchase a pair of optical/electrical conversion devices (commonly known as optical cat) during access. The optical fiber laying process is time-consuming and cannot be withdrawn once the cost is invested. In addition, the cost is relatively high, and the payment is generally based on monthly rent.

ADSL access can be directly modified on the existing telephone line, without modifying the signal transmission line, without punching through the wall and laying another cable, the normal copper telephone line can be used as the transmission medium, you only need a dedicated Modem to achieve high-speed data transmission. In addition, the cost is relatively low, and various payment methods are available, which can be subscription or pay by duration. The primary cost in the early stage was ADSL Modem.

The battle of the Internet bar industry is fierce, and everyone is scrambling for the site. Economic benefits must be considered first by operators. Select a practical and feasible networking method for Internet cafes according to their needs, and convert advanced technologies into practical and economical products and solutions, at the same time, the investment has gained both reliability and powerful performance, and the pursuit of higher investment efficiency is the consensus of Internet cafe operators. The cost of networking is, of course, the bottleneck for selecting an internet cafe networking solution. Optical fiber access and ADSL access have their own advantages in many aspects. However, in terms of cost, optical fiber access is obviously connected to ADSL. low cost and low initial investment are a strong advantage of ADSL access.

From the application environment of the access method:

Although FTTH is an inevitable direction for the future development of user access networks, the cost of FTTH is too high, in the next few decades, most access networks will continue to use existing copper wires. Among the many transitional broadband access network technologies, ADSL is still the most promising and competitive technology, it will be dominant in the next few years or even a dozen years. ADSL was initially developed for the video-on-demand service. With the development of technology, it has gradually become a more convenient broadband access method. ADSL has rich business functions and broad business prospects.

ADSL is a kind of "practical" Broadband Access Technology. The reason why it is "practical" is that its starting point is to make full use of the existing fixed network copper wire resources, achieve breakthroughs in bandwidth bottlenecks. This idea is very important for maintaining the original investment of the Telecom Network, which makes full use of this network.

The popularity of ADSL has swept across the world, and various major information manufacturers around the world are devoted to the development of ADSL Technology and Applications, which has led to the rapid development of ADSL technology and its applications. Telecom operators in Europe, America, Australia, Japan, South Korea, and Singapore have successively successfully promoted the ADSL business and formed a world-wide ADSL boom.

Summary:

After the broadband network is activated, the Internet is connected through ADSL in the overwhelming advertisement promotion, with high performance and low price. The characteristics of Broadband Network "light speed, SEA capacity" are becoming increasingly popular. Rich user resources and copper cable resources connected to users are their advantages. You only need to invest a certain amount of money to use ADSL to provide broadband access services for users, it is a good way to build a broadband access network.

However, the copper access network is limited by some insurmountable factors, which makes the information highway a "bottleneck" in the user access section ". In this case, people naturally think of optical fiber. Without a doubt, optical fiber is the ideal transmission medium for access networks. The optical fiber access network can overcome some restrictions that copper cables cannot overcome. Low Optical fiber loss and low frequency bandwidth remove the limitation of small diameter of copper cable. In addition, the optical fiber is not subject to electromagnetic interference, ensuring the signal transmission quality. Replacing the copper cable with the optical fiber cable can solve the congestion problem of underground communication pipelines in cities. As the performance of the optical fiber access network increases and the price drops, the optical fiber access system will become increasingly popular. For all broadband applications, the fiber-optic access network is very promising.