Upgrading of Cable Networks - Cable, Network Upgrades, Digital TV - Broadcasting Industry
With China Cable television To digital, multi-functional, industrialization, and the direction of the national network, cable networks around the active manner in the upgrading of the network. The optical fiber backbone, optical node to the cell, Coaxial cable Access the user's HFC network is a nationwide upgrading of cable networks the preferred target. The face of public demand for information increases, the cable television network broadcast by a single transmission to the two-way interactive multimedia Broadband Network direction. Cable TV transmission networks will build a large-capacity, broadband, standardization, digital two-way transmission Radio and TV Programming and integrated data transmission system.
1, broadband network construction and content of near-term objectives
Broadband network construction, using a web multi-platform model, as IP protocol used on the network is becoming increasingly popular, IP data traffic on the network and thus the greater the main body of the network must be a TCP / IP protocol-based broadband network in order to comply with the development trend of the data network to provide IP services on the most direct support at the same time, there are some special industries such as finance, public security, their security of data transmission, reliability and visibility of special requirements, whether or not these industries as these industries provide network transmission services. Should be a broadband TCP / IP protocol-based, high speed and large capacity, stable performance and ensure service quality and broadband network operators.
According to the actual situation, we developed network building program is to build a high-bandwidth, high speed, high-quality information transmission network for urban and rural coverage provide data transmission services and information services, and superior to non-broadcast sector joint connection, can provide users with IP-based data services (such as broadband access, IP-VPN, IP telephony, video transmission, Video on Demand (VOD), distance education, etc.).
Obtained by the analysis: current and new business potential demand for new features focus on enterprises and groups of users via the intranet and individual Intenet access, we should use Gigabit Ethernet as the main body, while some special users a high-speed network access program, which guarantees to provide safe and reliable service. In addition, broadband Xuanhua also considered to be effective as soon as possible in the short term. The network should be able to provide all levels of the following services:
Bank users: banking and securities data network users is the main user. Bank customers currently use Post 64KDDN main line, and more accustomed to using proprietary lines. Bank customers can access dedicated manner.
Government Online: Government's main objective is to achieve the mayor office network environment, command systems, government resource allocation systems, municipal management, party and government office system. Government high-speed Internet will be the main means of access will also be a number of options and flexible manner, can provide the DDN 2M interconnection can also provide direct access and bridging the LAN to achieve VPN interconnection.
Specific government business interconnection: including the tax system, health systems, security systems, business systems, the social security system of the CST system, transportation systems, business and the nature of the interconnection line with the Government of the same nature.
Enterprise systems: Enterprise of the interconnection will be the long term, the largest user base, on the one hand, companies can realize through WAN interconnection between the different branches, the most important thing, as long as the price is reasonable, business-to-high-speed access into the huge demand INTERNET.
Ordinary users: from the recent condition, for general users mainly through the HFC access IP platform, in particular the Internet and VOD platforms.
Integrated information network radio and television as a public data network platform, require network system that is open to do good, be able to support multiple vendor's equipment requirements, and can accommodate future network development, especially the rapid growth of the real people and multimedia information number of requests, as well as video and audio multimedia should have a great curiosity and desire, so choose a reality that can meet the requirements, but also facilitate future upgrades to maximize the network access system that meet the technology needs to become, then the choice to meet market needs.
According to the current access service request, we should be used by two users access the system to each user's access, or LAN, and Cablemodem access.
(1) Group the user LAN access. Short distance between the group users can use unshielded cable, for distances over UTP-5 transmission distance, the use of photoelectric conversion device with multimode or single mode fiber data transmission.
(2) intelligent building LAN access. Intelligent Building in the backbone network to export an optical port for direct access to the building LAN, if the buildings on the internal network to INTERNET, and building the user's IP address of the network not to use, you can set a single exit Proxy Server, unified distribution for the internal network address, internal network users through a proxy server
(3) Community LAN access. Community and LAN access can be requested by residents of the property to achieve integrated management, telephone Communicate, Computer networking, broadcasting information transmission business, which would demand of the switch control center has good interoperability transit. Smart ways to use the same access to buildings, but the network cabling which is necessary to fully consider the distribution of residential user environment, were installed multimode fiber or thin cable and other transmission medium.
(4) CABLEMODEM access. CABLEMODEM access and CATV network can be bi-directional interactive data transmission, it can take full advantage of broadband CATV rich resources to provide high-speed, high-quality, low latency data access, use of HFC network CABLEMODEM the system can achieve a variety of broadband data services such as high-speed INTERNET access, remote Mathematics, broadband video conferencing, online interactive games, online shopping and application.
A complete network system, not only to be able to provide users with a variety of high-performance data services, but also should ensure that network equipment and user safety. Radio and Television Information Network safety management should include user management, access control, automatic time-out exit Firewall, The system console login authentication of the user experience as then, through the user's user name and password match the recognition, IP-MAC-VLAN binding relationship to accept or reject the user's login, user access permissions to the different classified as general users, system users and super users, in order to increase security, the system also offers super into the exit function together to prevent illegal users
1, broadband network construction and content of near-term objectives
Broadband network construction, using a web multi-platform model, as IP protocol used on the network is becoming increasingly popular, IP data traffic on the network and thus the greater the main body of the network must be a TCP / IP protocol-based broadband network in order to comply with the development trend of the data network to provide IP services on the most direct support at the same time, there are some special industries such as finance, public security, their security of data transmission, reliability and visibility of special requirements, whether or not these industries as these industries provide network transmission services. Should be a broadband TCP / IP protocol-based, high speed and large capacity, stable performance and ensure service quality and broadband network operators.
According to the actual situation, we developed network building program is to build a high-bandwidth, high speed, high-quality information transmission network for urban and rural coverage provide data transmission services and information services, and superior to non-broadcast sector joint connection, can provide users with IP-based data services (such as broadband access, IP-VPN, IP telephony, video transmission, Video on Demand (VOD), distance education, etc.).
Obtained by the analysis: current and new business potential demand for new features focus on enterprises and groups of users via the intranet and individual Intenet access, we should use Gigabit Ethernet as the main body, while some special users a high-speed network access program, which guarantees to provide safe and reliable service. In addition, broadband Xuanhua also considered to be effective as soon as possible in the short term. The network should be able to provide all levels of the following services:
Bank users: banking and securities data network users is the main user. Bank customers currently use Post 64KDDN main line, and more accustomed to using proprietary lines. Bank customers can access dedicated manner.
Government Online: Government's main objective is to achieve the mayor office network environment, command systems, government resource allocation systems, municipal management, party and government office system. Government high-speed Internet will be the main means of access will also be a number of options and flexible manner, can provide the DDN 2M interconnection can also provide direct access and bridging the LAN to achieve VPN interconnection.
Specific government business interconnection: including the tax system, health systems, security systems, business systems, the social security system of the CST system, transportation systems, business and the nature of the interconnection line with the Government of the same nature.
Enterprise systems: Enterprise of the interconnection will be the long term, the largest user base, on the one hand, companies can realize through WAN interconnection between the different branches, the most important thing, as long as the price is reasonable, business-to-high-speed access into the huge demand INTERNET.
Ordinary users: from the recent condition, for general users mainly through the HFC access IP platform, in particular the Internet and VOD platforms.
Integrated information network radio and television as a public data network platform, require network system that is open to do good, be able to support multiple vendor's equipment requirements, and can accommodate future network development, especially the rapid growth of the real people and multimedia information number of requests, as well as video and audio multimedia should have a great curiosity and desire, so choose a reality that can meet the requirements, but also facilitate future upgrades to maximize the network access system that meet the technology needs to become, then the choice to meet market needs.
According to the current access service request, we should be used by two users access the system to each user's access, or LAN, and Cablemodem access.
(1) Group the user LAN access. Short distance between the group users can use unshielded cable, for distances over UTP-5 transmission distance, the use of photoelectric conversion device with multimode or single mode fiber data transmission.
(2) intelligent building LAN access. Intelligent Building in the backbone network to export an optical port for direct access to the building LAN, if the buildings on the internal network to INTERNET, and building the user's IP address of the network not to use, you can set a single exit Proxy Server, unified distribution for the internal network address, internal network users through a proxy server
(3) Community LAN access. Community and LAN access can be requested by residents of the property to achieve integrated management, telephone Communicate, Computer networking, broadcasting information transmission business, which would demand of the switch control center has good interoperability transit. Smart ways to use the same access to buildings, but the network cabling which is necessary to fully consider the distribution of residential user environment, were installed multimode fiber or thin cable and other transmission medium.
(4) CABLEMODEM access. CABLEMODEM access and CATV network can be bi-directional interactive data transmission, it can take full advantage of broadband CATV rich resources to provide high-speed, high-quality, low latency data access, use of HFC network CABLEMODEM the system can achieve a variety of broadband data services such as high-speed INTERNET access, remote Mathematics, broadband video conferencing, online interactive games, online shopping and application.
A complete network system, not only to be able to provide users with a variety of high-performance data services, but also should ensure that network equipment and user safety. Radio and Television Information Network safety management should include user management, access control, automatic time-out exit Firewall, The system console login authentication of the user experience as then, through the user's user name and password match the recognition, IP-MAC-VLAN binding relationship to accept or reject the user's login, user access permissions to the different classified as general users, system users and super users, in order to increase security, the system also offers super into the exit function together to prevent illegal users
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