Comprehensive analysis of the development status of Beijing Broadband Access Network

In the development of broadband access networks, the application of Beijing Netcom ADSL has become very popular. So I have studied the characteristics of broadband access networks and some solutions. I will share them with you here, I hope it will be useful to you. Beijing Netcom has been closely tracking the development of advanced communication technologies at home and abroad, and has been applied to broadband access networks such as LAN and ADSL. According to the needs of broadband access network construction, Beijing Netcom constructed a VDSL Broadband Access Network this year. This network uses large-capacity VDSL core switches, working group switches with small ports, and user access devices. It is a complete broadband access network system.

For the large-scale community or intelligent office buildings, hotels, Beijing Netcom adopts the multi-business exchange platform DHS-7000 provided by youxun Network (D-Link) as the core, multiple broadband access modes are provided for the following users through telephone lines or optical fiber cables. It supports different modules such as VDSL, ADSL, and LAN. For small and medium-sized hotels or communities, Beijing Netcom uses a 24-port VDSL switch as the core to provide broadband access networks for users through telephone lines. 24-way VDSL access, RJ-45 or single/Multimode Optical Fiber port, 10 M/100 M/M selectable uplink module.

Beijing Netcom uses the DEV-301 product for the user access solution. The device bridges the VDSL and Ethernet networks and provides an RJ-45 Ethernet port and two RJ-11 ports. The CPE device can be installed on the desktop or wall, the device also supports POTS communications-including ISDN or digital phones-Ethernet over VDSL services and telephone services can be provided on the same line through the built-in POTS splitter.

The Beijing Netcom VDSL solution has the following features:

Network security is a very important issue in the security of broadband access networks. It mainly includes the security of network devices and the security of information flowing between the entire network. The security of network devices is mainly reflected in network-level redundancy, attack prevention of key devices, and address anti-spoofing. For information flows, they are mainly information encryption and decryption. DHS-7000 provides redundancy in management module and power supply, and supports SNMPv3 in network management, so that management information can be encrypted.

Telecom-level business management Beijing Netcom VDSL networks use smart devices to enhance business management functions. It mainly includes multicast and ISP selection. The support for Multicast can be said to be very important. It is of great help to telecom to carry out video services and has played a huge role in traffic planning for the entire network. At present, as the telecom market becomes increasingly open, multiple ISPs are competing. It is very important for users to conveniently Select Access Service Providers, therefore, when many users build their own broadband access networks, they propose that ISP access can be distinguished.

Due to the fact that all VDSL products selected by Beijing Netcom support 802.1X, the overall solution can adopt the 802.1X Authentication System to implement end-to-end authentication management for each broadband access network user. Convenient and flexible wiring because VDSL transmission media can use telephone lines and the transmission distance is within 1.5Km, It is very flexible in the wiring design, that is, three or five types of lines can be used and the transmission distance is not limited.